wjbianjason

Have answered the question in your email? more confusion or question can be ask here, sorry for late again, I'm in travel recently.

@IPL thanks for your answer, but i don't think it is a sequential problem. because in this situation, all the items are displayed at the same time.

@rk2900 thanks, i'll read it

@wsteitz thanks for your detailed answer, I‘ll follow the competition and study the participants' methods

@yufengwhy thanks, i'll read it, If i get some gain, I'll write here