diff --git a/src/zh/tongli/build.gradle b/src/zh/tongli/build.gradle
new file mode 100644
index 000000000..5596ab74f
--- /dev/null
+++ b/src/zh/tongli/build.gradle
@@ -0,0 +1,8 @@
+ext {
+    extName = 'Tongli'
+    extClass = '.Tongli'
+    extVersionCode = 1
+    isNsfw = true
+}
+
+apply from: "$rootDir/common.gradle"
diff --git a/src/zh/tongli/res/mipmap-hdpi/ic_launcher.png b/src/zh/tongli/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 000000000..7a3d9772a
Binary files /dev/null and b/src/zh/tongli/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/src/zh/tongli/res/mipmap-mdpi/ic_launcher.png b/src/zh/tongli/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 000000000..ad3a7352c
Binary files /dev/null and b/src/zh/tongli/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/src/zh/tongli/res/mipmap-xhdpi/ic_launcher.png b/src/zh/tongli/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 000000000..e7c574885
Binary files /dev/null and b/src/zh/tongli/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/src/zh/tongli/res/mipmap-xxhdpi/ic_launcher.png b/src/zh/tongli/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 000000000..665e23b35
Binary files /dev/null and b/src/zh/tongli/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/src/zh/tongli/res/mipmap-xxxhdpi/ic_launcher.png b/src/zh/tongli/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 000000000..ae21f2146
Binary files /dev/null and b/src/zh/tongli/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/src/zh/tongli/src/eu/kanade/tachiyomi/extension/zh/tongli/Tongli.kt b/src/zh/tongli/src/eu/kanade/tachiyomi/extension/zh/tongli/Tongli.kt
new file mode 100644
index 000000000..95ecde315
--- /dev/null
+++ b/src/zh/tongli/src/eu/kanade/tachiyomi/extension/zh/tongli/Tongli.kt
@@ -0,0 +1,248 @@
+package eu.kanade.tachiyomi.extension.zh.tongli
+
+import android.content.SharedPreferences
+import android.text.InputType
+import androidx.preference.EditTextPreference
+import androidx.preference.ListPreference
+import androidx.preference.PreferenceScreen
+import eu.kanade.tachiyomi.network.GET
+import eu.kanade.tachiyomi.network.POST
+import eu.kanade.tachiyomi.source.ConfigurableSource
+import eu.kanade.tachiyomi.source.model.FilterList
+import eu.kanade.tachiyomi.source.model.MangasPage
+import eu.kanade.tachiyomi.source.model.Page
+import eu.kanade.tachiyomi.source.model.SChapter
+import eu.kanade.tachiyomi.source.model.SManga
+import eu.kanade.tachiyomi.source.online.HttpSource
+import keiyoushi.utils.getPreferences
+import keiyoushi.utils.parseAs
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.json.buildJsonObject
+import kotlinx.serialization.json.put
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.MultipartBody
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+import okhttp3.Response
+
+class Tongli : HttpSource(), ConfigurableSource {
+    override val name: String = "東立"
+    override val lang: String = "zh"
+    override val supportsLatest: Boolean = true
+    override val baseUrl: String = "https://ebook.tongli.com.tw"
+    private val apiUrl = "https://api.tongli.tw"
+
+    private val preferences: SharedPreferences = getPreferences()
+    private val jsonMediaType = "application/json;charset=UTF-8".toMediaType()
+
+    // Popular
+
+    override fun popularMangaRequest(page: Int) = GET("$apiUrl/SellRanking/1", headers)
+
+    override fun popularMangaParse(response: Response): MangasPage {
+        val mangas = response.parseAs<PopularResponseDto>().rankingSet[0].week.map {
+            it.toSManga()
+        }
+        return MangasPage(mangas, false)
+    }
+
+    // Latest
+
+    override fun latestUpdatesRequest(page: Int) =
+        GET("$apiUrl/SellShelf/6e7e5b75-1acd-4b7c-0097-08d6179fc10a/$page?pageSize=20", headers)
+
+    override fun latestUpdatesParse(response: Response): MangasPage {
+        val responseDto = response.parseAs<LatestResponseDto>()
+        val mangas = responseDto.books.map {
+            it.toSManga()
+        }
+        return MangasPage(mangas, responseDto.totalPage > responseDto.page)
+    }
+
+    // Search
+
+    override fun searchMangaRequest(page: Int, query: String, filters: FilterList): Request {
+        val requestBody = MultipartBody.Builder()
+            .setType(MultipartBody.FORM)
+            .addFormDataPart("SearchStr", query)
+            .build()
+        return POST("$apiUrl/Search", headers, requestBody)
+    }
+
+    override fun searchMangaParse(response: Response): MangasPage {
+        val mangas = response.parseAs<List<MangaDto>>().map {
+            it.toSManga()
+        }
+        return MangasPage(mangas, false)
+    }
+
+    // Details
+
+    override fun mangaDetailsRequest(manga: SManga): Request {
+        val bookGroupID = manga.url.substringBefore(",")
+        val isSerial = manga.url.substringAfter(",")
+        return GET("$apiUrl/Book?bookGroupID=$bookGroupID&isSerial=$isSerial", headers)
+    }
+
+    override fun mangaDetailsParse(response: Response): SManga {
+        return response.parseAs<DetailsDto>().toSManga()
+    }
+
+    // Chapters
+
+    override fun chapterListRequest(manga: SManga): Request {
+        val newHeaders = headersBuilder().add("Authorization: Bearer ${getToken()}").build()
+        val bookGroupID = manga.url.substringBefore(",")
+        val isSerial = manga.url.substringAfter(",")
+        return GET("$apiUrl/Book/BookVol/$bookGroupID?bookID=null&isSerial=$isSerial", newHeaders)
+    }
+
+    override fun chapterListParse(response: Response): List<SChapter> {
+        return response.parseAs<List<ChapterDto>>().mapNotNull {
+            it.toSChapter()
+        }.reversed()
+    }
+
+    override fun getMangaUrl(manga: SManga): String {
+        val bookGroupID = manga.url.substringBefore(",")
+        val isSerial = manga.url.substringAfter(",")
+        return "$baseUrl/book?id=$bookGroupID&isGroup=true&isSerials=$isSerial"
+    }
+
+    // Pages
+
+    override fun pageListRequest(chapter: SChapter): Request {
+        val newHeaders = headersBuilder().add("Authorization: Bearer ${getToken()}").build()
+        return GET("$apiUrl/Comic/sas/${chapter.url}", newHeaders)
+    }
+
+    override fun pageListParse(response: Response): List<Page> {
+        return response.parseAs<PageListResponseDto>().pages.mapIndexed { index, it ->
+            Page(index, imageUrl = it.imageURL)
+        }
+    }
+
+    override fun imageUrlParse(response: Response): String = throw UnsupportedOperationException()
+
+    private fun getToken(): String {
+        val token = preferences.getString("TOKEN", "")!!
+        val expires = preferences.getLong("EXPIRES", 0)
+        val currentTimeMillis = System.currentTimeMillis()
+        if (token.isEmpty()) {
+            val email = preferences.getString("EMAIL", "")!!
+            val password = preferences.getString("PASSWORD", "")!!
+            if (email.isEmpty()) {
+                return loginAnonymous()
+            }
+            return login(email, password)
+        }
+        if (expires < currentTimeMillis) {
+            val refreshToken = preferences.getString("REFRESHTOKEN", "")!!
+            return refresh(refreshToken)
+        }
+        return token
+    }
+
+    private fun login(email: String, password: String): String {
+        val requestBody = buildJsonObject {
+            put("email", email)
+            put("password", password)
+            put("returnSecureToken", true)
+        }.toString().toRequestBody(jsonMediaType)
+        val response: TokenResponseDto
+        try {
+            response = client.newCall(
+                POST(
+                    "https://www.googleapis.com/identitytoolkit/v3/relyingparty/verifyPassword?key=AIzaSyAJbYmo7KyhM_7CDXjjFXnp8bdRTNgbUIE",
+                    headers,
+                    requestBody,
+                ),
+            ).execute().parseAs<TokenResponseDto>()
+        } catch (e: SerializationException) {
+            // Remove email/password after failed login
+            preferences.edit()
+                .putString("EMAIL", "")
+                .putString("PASSWORD", "")
+                .apply()
+            throw Exception("登录失败")
+        }
+        val currentTimeMillis = System.currentTimeMillis()
+        preferences.edit()
+            .putString("TOKEN", response.idToken)
+            .putString("REFRESHTOKEN", response.refreshToken)
+            // Token expires after one hour
+            .putLong("EXPIRES", currentTimeMillis + 3600000)
+            .apply()
+        return response.idToken
+    }
+
+    private fun loginAnonymous(): String {
+        val requestBody = buildJsonObject {
+            put("returnSecureToken", true)
+        }.toString().toRequestBody(jsonMediaType)
+        val response = client.newCall(
+            POST(
+                "https://www.googleapis.com/identitytoolkit/v3/relyingparty/signupNewUser?key=AIzaSyAJbYmo7KyhM_7CDXjjFXnp8bdRTNgbUIE",
+                headers,
+                requestBody,
+            ),
+        ).execute().parseAs<TokenResponseDto>()
+        val currentTimeMillis = System.currentTimeMillis()
+        preferences.edit()
+            .putString("TOKEN", response.idToken)
+            .putString("REFRESHTOKEN", response.refreshToken)
+            .putLong("EXPIRES", currentTimeMillis + 3600000)
+            .apply()
+        return response.idToken
+    }
+
+    private fun refresh(refreshToken: String): String {
+        val requestBody = buildJsonObject {
+            put("grant_type", "refresh_token")
+            put("refresh_token", refreshToken)
+        }.toString().toRequestBody(jsonMediaType)
+        val response = client.newCall(
+            POST(
+                "https://securetoken.googleapis.com/v1/token?key=AIzaSyAJbYmo7KyhM_7CDXjjFXnp8bdRTNgbUIE",
+                headers,
+                requestBody,
+            ),
+        ).execute().parseAs<TokenResponseDto>()
+        val currentTimeMillis = System.currentTimeMillis()
+        preferences.edit()
+            .putString("TOKEN", response.idToken)
+            .putString("REFRESHTOKEN", response.refreshToken)
+            .putLong("EXPIRES", currentTimeMillis + 3600000)
+            .apply()
+        return response.idToken
+    }
+
+    override fun setupPreferenceScreen(screen: PreferenceScreen) {
+        ListPreference(screen.context).apply {
+            EditTextPreference(screen.context).apply {
+                key = "EMAIL"
+                title = "电子邮件"
+                summary = "该配置被修改后，会清空令牌(Token)以便重新登录；如果登录失败，会清空该配置"
+                setOnPreferenceChangeListener { _, _ ->
+                    // clean token after email/password changed
+                    preferences.edit().putString("TOKEN", "").apply()
+                    true
+                }
+            }.let(screen::addPreference)
+
+            EditTextPreference(screen.context).apply {
+                key = "PASSWORD"
+                title = "密码"
+                summary = "该配置被修改后，会清空令牌(Token)以便重新登录；如果登录失败，会清空该配置"
+                setOnBindEditTextListener {
+                    it.inputType = InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_PASSWORD
+                }
+                setOnPreferenceChangeListener { _, _ ->
+                    // clean token after email/password changed
+                    preferences.edit().putString("TOKEN", "").apply()
+                    true
+                }
+            }.let(screen::addPreference)
+        }
+    }
+}
diff --git a/src/zh/tongli/src/eu/kanade/tachiyomi/extension/zh/tongli/TongliDto.kt b/src/zh/tongli/src/eu/kanade/tachiyomi/extension/zh/tongli/TongliDto.kt
new file mode 100644
index 000000000..1ddd557a7
--- /dev/null
+++ b/src/zh/tongli/src/eu/kanade/tachiyomi/extension/zh/tongli/TongliDto.kt
@@ -0,0 +1,82 @@
+package eu.kanade.tachiyomi.extension.zh.tongli
+
+import eu.kanade.tachiyomi.source.model.SChapter
+import eu.kanade.tachiyomi.source.model.SManga
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.JsonNames
+
+@Serializable
+class PopularResponseDto(@SerialName("RankingSet") val rankingSet: List<RankingSetDto>)
+
+@Serializable
+class RankingSetDto(@SerialName("Week") val week: List<MangaDto>)
+
+@Serializable
+class MangaDto(
+    @JsonNames("BookTitle", "Title") private val bookTitle: String,
+    @JsonNames("BookCoverURL", "CoverURL") private val bookCoverURL: String,
+    @SerialName("BookGroupID") private val bookGroupID: String,
+    @SerialName("IsSerial") private val isSerial: Boolean,
+) {
+    fun toSManga() = SManga.create().apply {
+        url = "$bookGroupID,$isSerial"
+        title = bookTitle
+        thumbnail_url = bookCoverURL
+    }
+}
+
+@Serializable
+class LatestResponseDto(
+    @SerialName("TotalPage") val totalPage: Int,
+    @SerialName("Page") val page: Int,
+    @SerialName("Books") val books: List<MangaDto>,
+)
+
+@Serializable
+class ChapterDto(
+    @SerialName("BookID") private val bookID: String,
+    @SerialName("Vol") private val vol: String,
+    @SerialName("IsUpcoming") private val isUpcoming: Boolean,
+    @SerialName("IsPurchased") private val isPurchased: Boolean,
+    @SerialName("IsFree") private val isFree: Boolean,
+) {
+    fun toSChapter(): SChapter? = SChapter.create().apply {
+        if (isUpcoming) return null
+        url = bookID
+        // Prepend lock emoji to name if not readable
+        name = if (isFree || isPurchased) vol else "\uD83D\uDD12 $vol"
+    }
+}
+
+@Serializable
+class DetailsDto(
+    @SerialName("Title") private val title: String,
+    @SerialName("CoverURL") private val coverURL: String,
+    @SerialName("Authors") private val authors: List<AuthorDto>,
+    @SerialName("Introduction") private val introduction: String,
+) {
+    fun toSManga() = SManga.create().apply {
+        title = this@DetailsDto.title
+        thumbnail_url = coverURL
+        author = authors.joinToString {
+            if (it.title.isNullOrEmpty()) it.name else "${it.title}：${it.name}"
+        }
+        description = introduction
+    }
+}
+
+@Serializable
+class AuthorDto(@SerialName("Name") val name: String, @SerialName("Title") val title: String?)
+
+@Serializable
+class PageListResponseDto(@SerialName("Pages") val pages: List<ImageDto>)
+
+@Serializable
+class ImageDto(@SerialName("ImageURL") val imageURL: String)
+
+@Serializable
+class TokenResponseDto(
+    @JsonNames("id_token") val idToken: String,
+    @JsonNames("refresh_token") val refreshToken: String,
+)