Merge pull request #4 from huangbolun/qinbo_branch

Merge pull request #3 from huangbolun/master
Merge pull request #5 from huangbolun/master

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Merge pull request #6 from huangbolun/zhijiao_branch

Merge pull request #5 from huangbolun/master
Merge pull request #8 from huangbolun/master

master