diff --git a/.mvn/settings.xml b/.mvn/settings.xml
new file mode 100644
index 000000000..8f0d0b9eb
--- /dev/null
+++ b/.mvn/settings.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+  ~ Copyright 2016-present the IoT DC3 original author or authors.
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      https://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+
+    <!-- mirrors
+     | This is a list of mirrors to be used in downloading artifacts from remote repositories.
+     |
+     | It works like this: a POM may declare a repository to use in resolving certain artifacts.
+     | However, this repository may have problems with heavy traffic at times, so people have mirrored
+     | it to several places.
+     |
+     | That repository definition will have a unique id, so we can create a mirror reference for that
+     | repository, to be used as an alternate download site. The mirror site will be the preferred
+     | server for that repository.
+     |-->
+    <mirrors>
+
+        <mirror>
+            <id>public</id>
+            <mirrorOf>public</mirrorOf>
+            <name>Aliyun Apache Maven Public Packages</name>
+            <url>https://maven.aliyun.com/repository/public</url>
+        </mirror>
+
+    </mirrors>
+
+</settings>
\ No newline at end of file
diff --git a/dc3-center/dc3-center-data/src/main/resources/mapping/DeviceStatusHistoryMapper.xml b/dc3-center/dc3-center-data/src/main/resources/mapping/DeviceStatusHistoryMapper.xml
index cdeca0fc9..d46d1c719 100644
--- a/dc3-center/dc3-center-data/src/main/resources/mapping/DeviceStatusHistoryMapper.xml
+++ b/dc3-center/dc3-center-data/src/main/resources/mapping/DeviceStatusHistoryMapper.xml
@@ -29,7 +29,6 @@
         from dc3_device_status_history
         where device_id = #{id}
           and deleted = 0
-        order by create_time desc
-        limit 2;
+        order by create_time desc limit 2;
     </select>
 </mapper>
diff --git a/dc3-center/dc3-center-data/src/main/resources/mapping/DriverStatusHistoryMapper.xml b/dc3-center/dc3-center-data/src/main/resources/mapping/DriverStatusHistoryMapper.xml
index 2f1e52b6a..770234b72 100644
--- a/dc3-center/dc3-center-data/src/main/resources/mapping/DriverStatusHistoryMapper.xml
+++ b/dc3-center/dc3-center-data/src/main/resources/mapping/DriverStatusHistoryMapper.xml
@@ -28,7 +28,6 @@
         from dc3_driver_status_history
         where driver_id = #{id}
           and deleted = 0
-        order by create_time desc
-        limit 2;
+        order by create_time desc limit 2;
     </select>
 </mapper>
diff --git a/pom.xml b/pom.xml
index 379a749ea..0dd3901fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -130,6 +130,8 @@
     </profiles>
 
     <modules>
+        <module>dc3-api</module>
+        <module>dc3-common</module>
         <module>dc3-center</module>
         <module>dc3-driver</module>
         <module>dc3-gateway</module>