Revert "Revert "Revert "测试"""

This reverts commit 0a11069c7dc209e6787084721eb4f0f0482e4446.
Merge pull request #1 from suyuwen5/gray

Revert "Revert "Revert "测试"""  123456789
Revert "Revert "Revert "Revert "测试""""
Merge pull request #3 from suyuwen1/revert-1-gray

Revert 1 gray