diff --git a/src/zh/happymh/build.gradle b/src/zh/happymh/build.gradle
index f1304ccc6db..a972d90bff9 100644
--- a/src/zh/happymh/build.gradle
+++ b/src/zh/happymh/build.gradle
@@ -1,7 +1,7 @@
 ext {
     extName = 'Happymh'
     extClass = '.Happymh'
-    extVersionCode = 14
+    extVersionCode = 15
 }
 
 apply from: "$rootDir/common.gradle"
diff --git a/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/Happymh.kt b/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/Happymh.kt
index 2ead01550ba..40307cce907 100644
--- a/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/Happymh.kt
+++ b/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/Happymh.kt
@@ -4,7 +4,8 @@ import android.app.Application
 import android.widget.Toast
 import androidx.preference.EditTextPreference
 import androidx.preference.PreferenceScreen
-import eu.kanade.tachiyomi.extension.zh.happymh.dto.ChapterListDto
+import eu.kanade.tachiyomi.extension.zh.happymh.dto.ChapterByPageResponse
+import eu.kanade.tachiyomi.extension.zh.happymh.dto.ChapterByPageResponseData
 import eu.kanade.tachiyomi.extension.zh.happymh.dto.PageListResponseDto
 import eu.kanade.tachiyomi.extension.zh.happymh.dto.PopularResponseDto
 import eu.kanade.tachiyomi.network.GET
@@ -17,17 +18,18 @@ import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.util.asJsoup
-import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.decodeFromStream
 import okhttp3.FormBody
 import okhttp3.Headers
+import okhttp3.HttpUrl.Companion.toHttpUrl
 import okhttp3.Interceptor
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
 import okhttp3.ResponseBody.Companion.asResponseBody
+import rx.Observable
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
 import uy.kohesive.injekt.injectLazy
@@ -38,6 +40,7 @@ class Happymh : HttpSource(), ConfigurableSource {
     override val name: String = "嗨皮漫画"
     override val lang: String = "zh"
     override val supportsLatest: Boolean = true
+
     override val baseUrl: String = "https://m.happymh.com"
     private val json: Json by injectLazy()
 
@@ -54,7 +57,10 @@ class Happymh : HttpSource(), ConfigurableSource {
 
     private val rewriteOctetStream: Interceptor = Interceptor { chain ->
         val originalResponse: Response = chain.proceed(chain.request())
-        if (originalResponse.headers("Content-Type").contains("application/octet-stream") && originalResponse.request.url.toString().contains(".jpg")) {
+        if (originalResponse.headers("Content-Type")
+            .contains("application/octet-stream") && originalResponse.request.url.toString()
+                .contains(".jpg")
+        ) {
             val orgBody = originalResponse.body.source()
             val newBody = orgBody.asResponseBody("image/jpeg".toMediaType())
             originalResponse.newBuilder()
@@ -139,24 +145,62 @@ class Happymh : HttpSource(), ConfigurableSource {
         author = document.selectFirst("div.mg-property > p.mg-sub-title:nth-of-type(2)")!!.text()
         artist = author
         genre = document.select("div.mg-property > p.mg-cate > a").eachText().joinToString(", ")
-        description = document.selectFirst("div.manga-introduction > mip-showmore#showmore")!!.text()
+        description =
+            document.selectFirst("div.manga-introduction > mip-showmore#showmore")!!.text()
     }
 
     // Chapters
 
-    override fun chapterListParse(response: Response): List<SChapter> {
-        val comicId = response.request.url.pathSegments.last()
-        val document = response.asJsoup()
-        val script = document.selectFirst("mip-data > script:containsData(chapterList)")!!.data()
-        return json.decodeFromString<ChapterListDto>(script).chapterList.map {
-            SChapter.create().apply {
-                val chapterId = it.id
-                url = "/reads/$comicId/$chapterId"
-                name = it.chapterName
+    private fun fetchChapterByPage(manga: SManga, page: Int): ChapterByPageResponseData {
+        val code = manga.url.substringAfterLast("/")
+        val url = "$baseUrl/v2.0/apis/manga/chapterByPage".toHttpUrl().newBuilder()
+            .addQueryParameter("code", code)
+            .addQueryParameter("lang", "cn")
+            .addQueryParameter("order", "asc")
+            .addQueryParameter("page", "$page")
+            .build()
+        return client.newCall(GET(url, headers)).execute().parseAs<ChapterByPageResponse>().data
+    }
+
+    private fun fetchChapterByPageObservable(
+        manga: SManga,
+        page: Int,
+    ): Observable<ChapterByPageResponseData> {
+        return Observable.just(fetchChapterByPage(manga, page)).concatMap {
+            if (it.isEnd == 1 || it.items.isEmpty()) {
+                Observable.just(it)
+            } else {
+                Observable.just(it).concatWith(fetchChapterByPageObservable(manga, page + 1))
             }
         }
     }
 
+    override fun fetchChapterList(manga: SManga): Observable<List<SChapter>> {
+        return Observable
+            .defer {
+                fetchChapterByPageObservable(manga, 1)
+            }
+            .map {
+                it.items.map {
+                    SChapter.create().apply {
+                        name = it.chapterName
+                        url = "/mangaread/${it.codes}"
+                        chapter_number = it.order.toFloat()
+                    }
+                }
+            }
+            .toList()
+            .map { it.flatten().sortedByDescending { chapter -> chapter.chapter_number } }
+            .map {
+                // remove order mark
+                it.onEach { chapter ->
+                    chapter.chapter_number = 0f
+                }
+            }
+    }
+
+    override fun chapterListParse(response: Response) = throw UnsupportedOperationException()
+
     override fun getChapterUrl(chapter: SChapter): String {
         return baseUrl + chapter.url
     }
@@ -164,13 +208,12 @@ class Happymh : HttpSource(), ConfigurableSource {
     // Pages
 
     override fun pageListRequest(chapter: SChapter): Request {
-        if (chapter.url.startsWith("/v2.0/apis/manga/read")) {
+        if (!chapter.url.contains("mangaread")) {
             // Old format is detected
             throw Exception("请刷新章节列表")
         }
-        val comicId = chapter.url.substringAfter("/reads/").substringBefore("/")
-        val chapterId = chapter.url.substringAfterLast("/")
-        val url = "$baseUrl/v2.0/apis/manga/reading?code=$comicId&cid=$chapterId&v=v3.1613134"
+        val code = chapter.url.substringAfterLast("/")
+        val url = "$baseUrl/v2.0/apis/manga/reading?code=$code&v=v3.1818134"
         // Some chapters return 403 without this header
         val header = headersBuilder()
             .add("X-Requested-With", "XMLHttpRequest")
@@ -210,7 +253,8 @@ class Happymh : HttpSource(), ConfigurableSource {
                     Headers.headersOf("User-Agent", newValue as String)
                     true
                 } catch (e: Throwable) {
-                    Toast.makeText(context, "User Agent 无效：${e.message}", Toast.LENGTH_LONG).show()
+                    Toast.makeText(context, "User Agent 无效：${e.message}", Toast.LENGTH_LONG)
+                        .show()
                     false
                 }
             }
diff --git a/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/dto/HappymhDto.kt b/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/dto/HappymhDto.kt
index ac5ef9b8204..6811505c583 100644
--- a/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/dto/HappymhDto.kt
+++ b/src/zh/happymh/src/eu/kanade/tachiyomi/extension/zh/happymh/dto/HappymhDto.kt
@@ -21,10 +21,22 @@ data class MangaDto(
 
 // Chapters
 @Serializable
-data class ChapterListDto(val chapterList: List<ChapterDto>) {
-    @Serializable
-    data class ChapterDto(val id: String, val chapterName: String)
-}
+class ChapterByPageResponseDataItem(
+    val chapterName: String,
+    val order: Int,
+    val codes: String,
+)
+
+@Serializable
+class ChapterByPageResponseData(
+    val items: List<ChapterByPageResponseDataItem>,
+    val isEnd: Int,
+)
+
+@Serializable
+class ChapterByPageResponse(
+    val data: ChapterByPageResponseData,
+)
 
 // Pages
 @Serializable