diff --git a/app/src/main/assets/help/ruleHelp.md b/app/src/main/assets/help/ruleHelp.md
index 4845e43de..29518c406 100644
--- a/app/src/main/assets/help/ruleHelp.md
+++ b/app/src/main/assets/help/ruleHelp.md
@@ -1,7 +1,7 @@
 # 源规则帮助
 
-* [书源帮助文档](https://alanskycn.gitee.io/teachme/Rule/source.html)
-* [订阅源帮助文档](https://alanskycn.gitee.io/teachme/Rule/rss.html)
+* [书源帮助文档](https://celetor.github.io/teachme/Rule/source.html)
+* [订阅源帮助文档](https://celetor.github.io/teachme/Rule/rss.html)
 * 辅助键盘❓中可插入URL参数模板,打开帮助,js教程,正则教程,选择文件
 * 规则标志, {{......}}内使用规则必须有明显的规则标志,没有规则标志当作js执行
 ```
diff --git a/app/src/main/java/io/legado/app/model/ReadBook.kt b/app/src/main/java/io/legado/app/model/ReadBook.kt
index 10f6de8f7..1873abc2f 100644
--- a/app/src/main/java/io/legado/app/model/ReadBook.kt
+++ b/app/src/main/java/io/legado/app/model/ReadBook.kt
@@ -288,21 +288,26 @@ object ReadBook : CoroutineScope by MainScope() {
     }
 
     fun setPageIndex(index: Int) {
-        val textChapter = curTextChapter
-        if (textChapter != null) {
-            val pageIndex = durPageIndex
-            if (index > pageIndex) {
-                textChapter.getPage(index - 2)?.recycleRecorders()
-            }
-            if (index < pageIndex) {
-                textChapter.getPage(index + 3)?.recycleRecorders()
-            }
-        }
+        recycleRecorders(durPageIndex, index)
         durChapterPos = curTextChapter?.getReadLength(index) ?: index
         saveRead(true)
         curPageChanged(true)
     }
 
+    fun recycleRecorders(beforeIndex: Int, afterIndex: Int) {
+        executor.execute {
+            val textChapter = curTextChapter
+            if (textChapter != null) {
+                if (afterIndex > beforeIndex) {
+                    textChapter.getPage(afterIndex - 2)?.recycleRecorders()
+                }
+                if (afterIndex < beforeIndex) {
+                    textChapter.getPage(afterIndex + 3)?.recycleRecorders()
+                }
+            }
+        }
+    }
+
     fun openChapter(index: Int, durChapterPos: Int = 0, success: (() -> Unit)? = null) {
         if (index < chapterSize) {
             clearTextChapter()
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt b/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt
index 963639e73..53724ae85 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt
@@ -79,8 +79,8 @@ data class TextLine(
         }
     }
 
-    fun getColumnReverseAt(index: Int): BaseColumn {
-        return textColumns[textColumns.lastIndex - index]
+    fun getColumnReverseAt(index: Int, offset: Int = 0): BaseColumn {
+        return textColumns[textColumns.lastIndex - offset - index]
     }
 
     fun getColumnsCount(): Int {
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt b/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt
index 4d097077e..24e5d9cdf 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt
@@ -622,7 +622,7 @@ class TextChapterLayout(
         val spaceSize = words.count { it == " " }
         textLine.startX = absStartX + startX
         if (spaceSize > 1) {
-            val d = residualWidth / (spaceSize - 1)
+            val d = residualWidth / spaceSize
             textLine.wordSpacing = d
             var x = startX
             for (index in words.indices) {
@@ -735,14 +735,25 @@ class TextChapterLayout(
      * 超出边界处理
      */
     private fun exceed(absStartX: Int, textLine: TextLine, words: List<String>) {
+        var size = words.size
+        if (size < 2) return
         val visibleEnd = absStartX + visibleWidth
-        val endX = textLine.columns.lastOrNull()?.end?.roundToInt() ?: return
+        val columns = textLine.columns
+        var offset = 0
+        val endColumn = if (words.last() == " ") {
+            size--
+            offset++
+            columns[columns.lastIndex - 1]
+        } else {
+            columns.last()
+        }
+        val endX = endColumn.end.roundToInt()
         if (endX > visibleEnd) {
             textLine.exceed = true
-            val cc = (endX - visibleEnd) / words.size
-            for (i in 0..words.lastIndex) {
-                textLine.getColumnReverseAt(i).let {
-                    val py = cc * (words.size - i)
+            val cc = (endX - visibleEnd) / size
+            for (i in 0..<size) {
+                textLine.getColumnReverseAt(i, offset).let {
+                    val py = cc * (size - i)
                     it.start -= py
                     it.end -= py
                 }