diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/JsonTagTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/JsonTagTest.java
index 47d39b5e1046f15ec3a2d5525a1f9ed8ba9bef34..fe55cd6df76c425b8a38e7e7726e74808f12dcd1 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/JsonTagTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/JsonTagTest.java
@@ -1135,7 +1135,7 @@ public class JsonTagTest {
 
         }
         Assert.assertEquals(8, count);
-        Assert.assertEquals("\"femail\"", s);
+        Assert.assertEquals("\"收到货\"", s);
         close(resultSet);
     }
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ws/WSJsonTagTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ws/WSJsonTagTest.java
index 666ac910e76d9d1f379d8dfa964a10705bee7097..4709c8586874f8379ac0546eb937139486d06c16 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ws/WSJsonTagTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ws/WSJsonTagTest.java
@@ -1146,7 +1146,7 @@ public class WSJsonTagTest {
 
         }
         Assert.assertEquals(8, count);
-        Assert.assertEquals("\"femail\"", s);
+        Assert.assertEquals("\"收到货\"", s);
         close(resultSet);
     }
 
diff --git a/src/os/src/windows/wString.c b/src/os/src/windows/wString.c
index 3dd44bb817fa4b1f96b99fba39801fcd508106b9..1d7cfd9af19a73ea2f56530eac3d33493c25c699 100644
--- a/src/os/src/windows/wString.c
+++ b/src/os/src/windows/wString.c
@@ -93,9 +93,9 @@ int32_t twcslen(const wchar_t *wcs) {
 }
 
 int32_t tasoUcs4Compare(void *f1_ucs4, void *f2_ucs4, int32_t bytes) {
-  for (int32_t i = 0; i < bytes; i+=4) {
-    int32_t f1 = *(int32_t *)((char *)f1_ucs4 + i * 4);
-    int32_t f2 = *(int32_t *)((char *)f2_ucs4 + i * 4);
+  for (int32_t i = 0; i < bytes; i += TSDB_NCHAR_SIZE) {
+    int32_t f1 = *(int32_t *)((char *)f1_ucs4 + i);
+    int32_t f2 = *(int32_t *)((char *)f2_ucs4 + i);
 
     if ((f1 == 0 && f2 != 0) || (f1 != 0 && f2 == 0)) {
       return f1 - f2;