diff --git a/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt b/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
index 6cb5892b5..1577e6bda 100644
--- a/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
+++ b/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
@@ -24,6 +24,10 @@ class Coroutine<T>(
             return Coroutine(scope, context, block)
         }
 
+        fun cancel() {
+            DEFAULT.cancel()
+        }
+
     }
 
     private val job: Job
diff --git a/app/src/main/java/io/legado/app/service/help/ReadBook.kt b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
index 31adc1e33..569f50430 100644
--- a/app/src/main/java/io/legado/app/service/help/ReadBook.kt
+++ b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
@@ -16,10 +16,7 @@ import io.legado.app.ui.book.read.page.provider.ChapterProvider
 import io.legado.app.ui.book.read.page.provider.ImageProvider
 import io.legado.app.utils.msg
 import io.legado.app.utils.toastOnUi
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
-import kotlinx.coroutines.launch
 import splitties.init.appCtx
 import kotlin.math.max
 import kotlin.math.min
@@ -139,7 +136,7 @@ object ReadBook {
                     callBack?.upContent()
                 }
                 loadContent(durChapterIndex.plus(1), upContent, false)
-                GlobalScope.launch(Dispatchers.IO) {
+                Coroutine.async {
                     val maxChapterIndex =
                         min(chapterSize - 1, durChapterIndex + AppConfig.preDownloadNum)
                     for (i in durChapterIndex.plus(2)..maxChapterIndex) {
@@ -157,7 +154,10 @@ object ReadBook {
         }
     }
 
-    fun moveToPrevChapter(upContent: Boolean, toLast: Boolean = true): Boolean {
+    fun moveToPrevChapter(
+        upContent: Boolean,
+        toLast: Boolean = true
+    ): Boolean {
         if (durChapterIndex > 0) {
             durChapterPos = if (toLast) prevTextChapter?.lastReadLength ?: 0 else 0
             durChapterIndex--
@@ -171,7 +171,7 @@ object ReadBook {
                     callBack?.upContent()
                 }
                 loadContent(durChapterIndex.minus(1), upContent, false)
-                GlobalScope.launch(Dispatchers.IO) {
+                Coroutine.async {
                     val minChapterIndex = max(0, durChapterIndex - 5)
                     for (i in durChapterIndex.minus(2) downTo minChapterIndex) {
                         delay(1000)
diff --git a/app/src/main/java/io/legado/app/ui/book/search/HistoryKeyAdapter.kt b/app/src/main/java/io/legado/app/ui/book/search/HistoryKeyAdapter.kt
index 660410c44..f7bbd8297 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/HistoryKeyAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/HistoryKeyAdapter.kt
@@ -3,13 +3,9 @@ package io.legado.app.ui.book.search
 import android.view.ViewGroup
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.RecyclerAdapter
-import io.legado.app.data.appDb
 import io.legado.app.data.entities.SearchKeyword
 import io.legado.app.databinding.ItemFilletTextBinding
 import io.legado.app.ui.widget.anima.explosion_field.ExplosionField
-import kotlinx.coroutines.Dispatchers.IO
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.launch
 import splitties.views.onLongClick
 
 class HistoryKeyAdapter(activity: SearchActivity, val callBack: CallBack) :
@@ -42,9 +38,7 @@ class HistoryKeyAdapter(activity: SearchActivity, val callBack: CallBack) :
             onLongClick {
                 explosionField.explode(this, true)
                 getItem(holder.layoutPosition)?.let {
-                    GlobalScope.launch(IO) {
-                        appDb.searchKeywordDao.delete(it)
-                    }
+                    callBack.deleteHistory(it)
                 }
             }
         }
@@ -52,5 +46,6 @@ class HistoryKeyAdapter(activity: SearchActivity, val callBack: CallBack) :
 
     interface CallBack {
         fun searchHistory(key: String)
+        fun deleteHistory(searchKeyword: SearchKeyword)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt b/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
index 8d6da964f..03f1deb8e 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
@@ -366,4 +366,8 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
             }
         }
     }
+
+    override fun deleteHistory(searchKeyword: SearchKeyword) {
+        viewModel.deleteHistory(searchKeyword)
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt b/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
index 42fa04e83..6a88d649d 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
@@ -186,6 +186,10 @@ class SearchViewModel(application: Application) : BaseViewModel(application),
         }
     }
 
+    fun deleteHistory(searchKeyword: SearchKeyword) {
+        appDb.searchKeywordDao.delete(searchKeyword)
+    }
+
     override fun onCleared() {
         super.onCleared()
         searchBookModel.close()
diff --git a/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt b/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt
index fc140d0c9..78c093ba4 100644
--- a/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/dict/DictDialog.kt
@@ -1,5 +1,6 @@
 package io.legado.app.ui.dict
 
+import android.os.Build
 import android.os.Bundle
 import android.text.Html
 import android.text.method.LinkMovementMethod
@@ -59,7 +60,11 @@ class DictDialog : BaseDialogFragment() {
         }
         viewModel.dictHtmlData.observe(viewLifecycleOwner) {
             binding.rotateLoading.invisible()
-            binding.tvDict.text = Html.fromHtml(it)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                binding.tvDict.text = Html.fromHtml(it, Html.FROM_HTML_MODE_LEGACY)
+            } else {
+                binding.tvDict.text = Html.fromHtml(it)
+            }
         }
         viewModel.dict(word)