改写大区配置文件，去掉冗余字眼，使结构更加紧凑，层次分明。
```xml
         <Config>
                    <Region id='main' levelmax='12' mode='battle' >
                      <Account exp="5" duration="pve_expe" reason="upgrade" />
         </Region>
	</Config>

	<Config>
			<Region id='expert' levelMax='15' mode='battle' >
				<Account exp="6" duration="Infinity" reason="challenge" />
			</Region>
	</Config>

	<Config>
			<Region id='normal' levelMax='10' mode='battlescopequest' >
				<Account exp="4" duration="pve_exp" reason="sesstrial" />
			</Region>
	</Config>
```
要求：去掉冗余字眼，使结构更加紧凑，层次分明。
user
```xml
<Config>
    <Region id="main" levelMax="12" mode="battle">
        <Account exp="5" duration="pve_expe" reason="upgrade" />
    </Region>
</Config>

<Config>
    <Region id="expert" levelMax="15" mode="battle">
        <Account exp="6" duration="Infinity" reason="challenge" />
    </Region>
</Config>

<Config>
    <Region id="normal" levelMax="10" mode="battlescopequest">
        <Account exp="4" duration="pve_exp" reason="sesstrial" />
    </Region>
</Config>
```
assistant