diff --git a/docs/guide/03-basic-use.md b/docs/guide/03-basic-use.md
index 43f5f01..a3a032c 100644
--- a/docs/guide/03-basic-use.md
+++ b/docs/guide/03-basic-use.md
@@ -69,80 +69,7 @@ postgres=#
 - partions(xx)初始化时建立分区子表个数。
 - 增加分区子表的方法ALTER TABLE public.t1_pt ADD PARTITIONS 2;  
 
-### 1.3、创建shard冷热分区表
-![OpenTenBase_shard冷热分区表](images/1.3shard_cold_hot.jpg)
-![OpenTenBase_shard冷热分区表续](images/1.3shard_cold_hot_2.jpg)
- 
-``` 
-[opentenbase@VM_0_37_centos shell]$ psql -h 172.16.0.42 -p 11387 -d postgres -U opentenbase
-psql (PostgreSQL 10.0 opentenbase V2)
-Type "help" for help.
-
-postgres=# create table public.t1_cold_hot
-(
-f1 int not null,
-f2 timestamp not null,
-f3 varchar(20),
-primary key(f1)
-) 
-partition by range (f2) 
-begin (timestamp without time zone '2017-01-01 0:0:0') 
-step (interval '12 month') partitions (4) 
-distribute by shard(f1,f2) 
-to group default_group cold_group;
-CREATE TABLE
-postgres=# \d+ public.t1_cold_hot
-                                          Table "public.t1_cold_hot"
- Column |            Type             | Collation | Nullable | Default | Storage  | Stats target | Description 
---------+-----------------------------+-----------+----------+---------+----------+--------------+-------------
- f1     | integer                     |           | not null |         | plain    |              | 
- f2     | timestamp without time zone |           | not null |         | plain    |              | 
- f3     | character varying(20)       |           |          |         | extended |              | 
-Indexes:
-    "t1_cold_hot_pkey" PRIMARY KEY, btree (f1)
-Distribute By SHARD(f1,f2)
-        Hotnodes:dn001 Coldnodes:dn002
-Partition By: RANGE(f2)
-         # Of Partitions: 4
-         Start With: 2017-01-01
-         Interval Of Partition: 12 MONTH
-
-postgres=#  
-
-```
-
-说明：
-
-- Distribute By SHARD(f1,f2)，冷热分区表需要指定两个字段来做路由，分别是分布键和分区键。
-- to group default_group cold_group，需要指定两个存储组，第一个是热数据存储组，第二个是冷存储组。
-
-创建时间范围冷热分区表需要有两个group，冷数据的cold_group对应的节点需要标识为冷节点，如下所示
- 
-```
- 
-[opentenbase@VM_0_37_centos shell]$ psql -h 172.16.0.42 -p 11000 -d postgres -U opentenbase
-psql (PostgreSQL 10.0 opentenbase V2)
-Type "help" for help.
- 
-postgres=#  select pg_set_node_cold_access();
- pg_set_node_cold_access 
--------------------------
- success
-(1 row)
-
-```
-
-冷热分区表需要在postgresql.conf中配置冷热分区时间参数和分区级别，如下所示
-
-``` 
-
-cold_hot_sepration_mode = 'year'
-enable_cold_seperation = true
-manual_hot_date = '2019-01-01'
-
-```
-
-### 1.4、创建复制表
+### 1.3、创建复制表
 ![OpenTenBase_shard冷热分区表](images/1.4repilication.jpg) 
 
 ```