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## **What is thrift FieldMask**?
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FieldMask is inspired by [Protobuf](https://protobuf.dev/reference/protobuf/google.protobuf/#field-mask) and used to indicate the data that users care about, and filter out useless data, during a RPC call, in order to reduce network package size and accelerate serializing/deserializing process. This technology has been widely used among Protobuf [services](https://netflixtechblog.com/practical-api-design-at-netflix-part-1-using-protobuf-fieldmask-35cfdc606518).
+![fieldmask](static/img/docs/kitex/Tutorials/advanced-feature/fieldmask.png)
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## **How to construct a FieldMask**?
To construct a fieldmask, you need two things:
diff --git a/content/zh/docs/kitex/Tutorials/advanced-feature/fieldmask.md b/content/zh/docs/kitex/Tutorials/advanced-feature/fieldmask.md
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## 什么是 Thrift FieldMask?
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FieldMask 是受到 [Protobuf](https://protobuf.dev/reference/protobuf/google.protobuf/#field-mask) 的启发,用于在 RPC 调用时**指示用户关心的数据并过滤掉无用的数据**的一种手段。该技术不但可以在 RPC 服务中实现**特定字段的屏蔽**,同时还可以**减少消息传输开销**以提升服务性能,目前已广泛应用于 Protobuf[服务](https://netflixtechblog.com/practical-api-design-at-netflix-part-1-using-protobuf-fieldmask-35cfdc606518)中。
+![fieldmask](static/img/docs/kitex/Tutorials/advanced-feature/fieldmask.png)
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对于 thrift RPC 服务来说,有如下潜在使用场景:
- 下发字段管控。如 隐私合规,请求打包 等业务
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