diff --git a/src/main/kotlin/com/lanyuanxiaoyao/bookstore/Entity.kt b/src/main/kotlin/com/lanyuanxiaoyao/bookstore/Entity.kt
index a240286..c8f1f97 100644
--- a/src/main/kotlin/com/lanyuanxiaoyao/bookstore/Entity.kt
+++ b/src/main/kotlin/com/lanyuanxiaoyao/bookstore/Entity.kt
@@ -89,6 +89,7 @@ class Line(
     @Lob
     @Column(nullable = false)
     var text: String,
+    var newText: String?,
     @ManyToOne(cascade = [CascadeType.DETACH], fetch = FetchType.LAZY)
     @JoinColumn(nullable = false, foreignKey = ForeignKey(ConstraintMode.NO_CONSTRAINT))
     var chapter: Chapter
diff --git a/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/ChapterController.kt b/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/ChapterController.kt
index 59d30ec..26a9144 100644
--- a/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/ChapterController.kt
+++ b/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/ChapterController.kt
@@ -82,6 +82,7 @@ class ChapterController {
                     lineId = IdUtil.fastSimpleUUID(),
                     sequence = startIndex + index,
                     text = line.trim(),
+                    newText = null,
                     chapter = chapter,
                 )
             }
diff --git a/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/LineController.kt b/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/LineController.kt
index a2e8f8a..f511a96 100644
--- a/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/LineController.kt
+++ b/src/main/kotlin/com/lanyuanxiaoyao/bookstore/controller/LineController.kt
@@ -53,6 +53,7 @@ class LineController {
                 lineId = item.lineId ?: IdUtil.fastSimpleUUID(),
                 sequence = item.sequence,
                 text = item.text,
+                newText = null,
                 chapter = chapter,
             )
         )