diff --git a/tests/system-test/2-query/char_length.py b/tests/system-test/2-query/char_length.py
index 31a58c2b267dd86023061bf9546826064c534b2a..d91b0349cc94f2ae96ed0ff0c0f85dc1b29b0d4c 100644
--- a/tests/system-test/2-query/char_length.py
+++ b/tests/system-test/2-query/char_length.py
@@ -152,10 +152,10 @@ class TDTestCase:
                 f"insert into ct1 values ( { now_time - i * 1000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct4 values ( { now_time - i * 776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct4 values ( { now_time - i * 7776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct2 values ( { now_time - i * 776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct2 values ( { now_time - i * 7776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
         tdSql.execute(
             f'''insert into ct1 values
diff --git a/tests/system-test/2-query/join.py b/tests/system-test/2-query/join.py
index 14b2c3978d96c65bd9229cd48185e257d8300221..671a926cc2d6234a08c8bbd921521945f01a104a 100644
--- a/tests/system-test/2-query/join.py
+++ b/tests/system-test/2-query/join.py
@@ -153,10 +153,10 @@ class TDTestCase:
                 f"insert into ct1 values ( { now_time - i * 1000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct4 values ( { now_time - i * 776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct4 values ( { now_time - i * 7776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct2 values ( { now_time - i * 776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct2 values ( { now_time - i * 7776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
         tdSql.execute(
             f'''insert into ct1 values
diff --git a/tests/system-test/2-query/length.py b/tests/system-test/2-query/length.py
index 57a8bf71f3c301dc56d8073a84da6b75730c906f..88b4236ca8dc24434fbdef9bddb6714daabebfe0 100644
--- a/tests/system-test/2-query/length.py
+++ b/tests/system-test/2-query/length.py
@@ -153,10 +153,10 @@ class TDTestCase:
                 f"insert into ct1 values ( { now_time - i * 1000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct4 values ( { now_time - i * 776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct4 values ( { now_time - i * 7776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct2 values ( { now_time - i * 776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct2 values ( { now_time - i * 7776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
         tdSql.execute(
             f'''insert into ct1 values
diff --git a/tests/system-test/2-query/lower.py b/tests/system-test/2-query/lower.py
index 0af328fb323458bdd1b5313e2ca5ef52bd6750e3..ec42ed3089daa1c08feded51accdbfe9834e1b97 100644
--- a/tests/system-test/2-query/lower.py
+++ b/tests/system-test/2-query/lower.py
@@ -150,10 +150,10 @@ class TDTestCase:
                 f"insert into ct1 values ( { now_time - i * 1000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct4 values ( { now_time - i * 776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct4 values ( { now_time - i * 7776000000 }, {i}, {11111 * i}, {111 * i % 32767 }, {11 * i % 127}, {1.11*i}, {1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
             tdSql.execute(
-                f"insert into ct2 values ( { now_time - i * 776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
+                f"insert into ct2 values ( { now_time - i * 7776000000 }, {-i},  {-11111 * i}, {-111 * i % 32767 }, {-11 * i % 127}, {-1.11*i}, {-1100.0011*i}, {i%2}, 'binary{i}', 'nchar{i}', { now_time + 1 * i } )"
             )
         tdSql.execute(
             f'''insert into ct1 values