diff --git a/docs-2.0/3.ngql-guide/3.data-types/4.date-and-time.md b/docs-2.0/3.ngql-guide/3.data-types/4.date-and-time.md
index 0bd4e23f70c..522bf0043d0 100644
--- a/docs-2.0/3.ngql-guide/3.data-types/4.date-and-time.md
+++ b/docs-2.0/3.ngql-guide/3.data-types/4.date-and-time.md
@@ -157,7 +157,18 @@ The `DURATION` data type is used to indicate a period of time. Map data that are
     nebula> INSERT VERTEX date1(p1, p2, p3) VALUES "test1":(date("2021-03-17"), time("17:53:59"), datetime("2017-03-04T22:30:40.003000[Asia/Shanghai]"));
     ```
 
-3. Return the content of the property `p1` on `test1`.
+3. Query whether the value of property `p1` on the `test1` tag is `2021-03-17`.
+
+    ```ngql
+    nebula> MATCH (v:date1)  RETURN v.date1.p1 == date("2021-03-17");
+    +----------------------------------+
+    | (v.date1.p1==date("2021-03-17")) |
+    +----------------------------------+
+    | true                             |
+    +----------------------------------+
+    ```
+
+4. Return the content of the property `p1` on `test1`.
 
     ```ngql
     nebula> CREATE TAG INDEX IF NOT EXISTS date1_index ON date1(p1);
@@ -170,13 +181,26 @@ The `DURATION` data type is used to indicate a period of time. Map data that are
     +------------------+
     ```
 
-4. Create a tag named `school` with the property of `TIMESTAMP`.
+5. Search for vertices with `p3` property values less than `2023-01-01T00:00:00.000000`, and return the `p3` values.
+
+    ```ngql
+    nebula> MATCH (v:date1)  \
+    WHERE v.date1.p3 < datetime("2023-01-01T00:00:00.000000") \
+    RETURN v.date1.p3;
+    +----------------------------+
+    | v.date1.p3                 |
+    +----------------------------+
+    | 2017-03-04T14:30:40.003000 |
+    +----------------------------+
+    ```
+
+6. Create a tag named `school` with the property of `TIMESTAMP`.
 
     ```ngql
     nebula> CREATE TAG IF NOT EXISTS school(name string , found_time timestamp);
     ```
 
-5. Insert a vertex named `DUT` with a found-time timestamp of `"1988-03-01T08:00:00"`.
+7. Insert a vertex named `DUT` with a found-time timestamp of `"1988-03-01T08:00:00"`.
 
     ```ngql
     # Insert as a timestamp. The corresponding timestamp of 1988-03-01T08:00:00 is 573177600, or 573206400 UTC.
@@ -186,7 +210,7 @@ The `DURATION` data type is used to indicate a period of time. Map data that are
     nebula> INSERT VERTEX school(name, found_time) VALUES "DUT":("DUT", timestamp("1988-03-01T08:00:00"));
     ```
 
-6. Insert a vertex named `dut` and store time with `now()` or `timestamp()` functions.
+8. Insert a vertex named `dut` and store time with `now()` or `timestamp()` functions.
 
     ```ngql
     # Use now() function to store time