diff --git a/NewDevGuide.md b/NewDevGuide.md
index 6312c7b..6d4ca5d 100644
--- a/NewDevGuide.md
+++ b/NewDevGuide.md
@@ -94,35 +94,35 @@
 示例:
 
 ```xml
-<!-- properties -->
-	<bean class="com.alibaba.otter.canal.instance.spring.support.PropertyPlaceholderConfigurer" lazy-init="false">
-		<property name="ignoreResourceNotFound" value="true" />
-		<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/><!-- 允许system覆盖 -->
-		<property name="locationNames">
-			<list>
-				<value>classpath:canal.properties</value>
-				<value>classpath:${canal.instance.destination:}/instance.properties</value>
-			</list>
-		</property>
-	</bean>
-	<bean id="instance" class="com.alibaba.otter.canal.instance.spring.CanalInstanceWithSpring">
-		<property name="destination" value="${canal.instance.destination}" />
-		<property name="eventParser">
-			<ref local="eventParser" />
-		</property>
-		<property name="eventSink">
-			<ref local="eventSink" />
-		</property>
-		<property name="eventStore">
-			<ref local="eventStore" />
-		</property>
-		<property name="metaManager">
-			<ref local="metaManager" />
-		</property>
-		<property name="alarmHandler">
-			<ref local="alarmHandler" />
-		</property>
-	</bean>
+<bean class="com.alibaba.otter.canal.instance.spring.support.PropertyPlaceholderConfigurer" lazy-init="false">
+    <property name="ignoreResourceNotFound" value="true" />
+    <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/><!-- 允许system覆盖 -->
+    <property name="locationNames">
+        <list>
+	    <value>classpath:canal.properties</value>
+	    <value>classpath:${canal.instance.destination:}/instance.properties</value> 
+        </list>
+     </property>
+</bean>
+
+<bean id="instance" class="com.alibaba.otter.canal.instance.spring.CanalInstanceWithSpring">
+    <property name="destination" value="${canal.instance.destination}" />
+    <property name="eventParser">
+	<ref local="eventParser" />
+    </property>
+    <property name="eventSink">
+	<ref local="eventSink" />
+    </property>
+    <property name="eventStore">
+        <ref local="eventStore" />
+    </property>
+    <property name="metaManager">
+	<ref local="metaManager" />
+    </property>
+    <property name="alarmHandler">
+	<ref local="alarmHandler" />
+    </property>
+</bean>
 ......
 ```