OpenHUTB
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 [__30.触发改变网格的材质__](https://bbs.huaweicloud.com/blogs/310537)
 
-[__31.通过插值和重叠事件实现开门效果__](https://bbs.huaweicloud.com/blogs/310538)
+[__31.通过插值和重叠事件实现开门效果__](https://bbs.huaweicloud.com/blogs/310538) - 开车门
 
 
 ### 技巧