diff --git a/docs-2.0/4.deployment-and-installation/1.resource-preparations.md b/docs-2.0/4.deployment-and-installation/1.resource-preparations.md
index db451ceb1fc..91d18110994 100644
--- a/docs-2.0/4.deployment-and-installation/1.resource-preparations.md
+++ b/docs-2.0/4.deployment-and-installation/1.resource-preparations.md
@@ -107,49 +107,50 @@ This section guides you through the downloading and installation of software req
 
 2. Check if the GCC and cmake on your host are in the right version. See [Software requirements for compiling Nebula Graph](#software_requirements_for_compiling_nebula_graph) for the required versions.
 
+
+  ```bash
+  $ g++ --version
+  $ cmake --version
+  ```
+
+  If your GCC and CMake are in the right version, then you are all set. If they are not, follow the sub-steps as follows.
+
+  1. Clone the `nebula` repository to your host.
+
     ```bash
-    $ g++ --version
-    $ cmake --version
+    $ git clone -b {{nebula.branch}} https://github.com/vesoft-inc/nebula-common.git
     ```
+ 
+    Users can use the `--branch` or `-b` option to specify the branch to be cloned. For example, for {{ nebula.release }}, run the following  command.
 
-    If your GCC and CMake are in the right version, then you are all set. If they are not, follow the sub-steps as follows.
+    ```bash
+    $ git clone --branch {{nebula.branch }} https://github.com/vesoft-inc/nebula-common.git
+    ```
 
-    1. Clone the `nebula` repository to your host.
+  1. Make `nebula` the current working directory.
 
-        ```bash
-        $ git clone -b {{common.branch}} https://github.com/vesoft-inc/nebula-common.git
-        ```
- 
-        Users can use the `--branch` or `-b` option to specify the branch to be cloned. For example, for {{ nebula.release }}, run the following  command.
- 
-        ```bash
-        $ git clone --branch {{ nebula.branch }} https://github.com/vesoft-inc/nebula-common.git
-        ```
+    ```bash
+    $ cd nebula
+    ```
 
-    2. Make `nebula` the current working directory.
+  1. Run the following commands to install and enable CMake and GCC.
 
-       ```bash
-       $ cd nebula
-       ```
+    ```bash
+    // Install CMake.
+    $ ./third-party/install-cmake.sh cmake-install
 
-    3. Run the following commands to install and enable CMake and GCC.
+    // Enable CMake.
+    $ source cmake-install/bin/enable-cmake.sh
 
-       ```bash
-       // Install CMake.
-       $ ./third-party/install-cmake.sh cmake-install
- 
-       // Enable CMake.
-       $ source cmake-install/bin/enable-cmake.sh
- 
-       // Authorize the write privilege to the opt directory.
-       $ sudo mkdir /opt/vesoft && sudo chmod -R a+w /opt/vesoft
- 
-       // Install GCC. Installing GCC to the opt directory requires the write privilege. And users can change it to other locations.
-       $ ./third-party/install-gcc.sh --prefix=/opt
- 
-       // Enable GCC.
-       $ source /opt/vesoft/toolset/gcc/7.5.0/enable
-      ```
+    // Authorize the write privilege to the opt directory.
+    $ sudo mkdir /opt/vesoft && sudo chmod -R a+w /opt/vesoft
+
+    // Install GCC. Installing GCC to the opt directory requires the write privilege. And users can change it to other locations.
+    $ ./third-party/install-gcc.sh --prefix=/opt
+
+    // Enable GCC.
+    $ source /opt/vesoft/toolset/gcc/7.5.0/enable
+    ```
 
 3. Execute the script `install-third-party.sh`.