some sketch work update. 2017.6.4

Yintion j 20170601231757
Yintion j 20170601231745
Yintion j 20170601231749
Yintion j 20170604120854
Yintion j 20170604120913
Yintion j 20170604120916
Yintion j 20170604120938
Yintion j 20170604120941

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