Merge pull request #1 from 11693-01/master

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Merge pull request #24 from yanyankangkang/master

Merge pull request #1 from 11693-01/master
Merge pull request #2 from 11693-01/master

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Merge pull request #3 from 11693-01/master

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Merge pull request #31 from yanyankangkang/master

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