Add doc in chinese.
Add doc in chinese.

Why plain C is better for Paddle to use as a multi-language interface.

PaddlePaddle/Paddle,cxysteven/Paddle,emailweixu/Paddle,pengli09/Paddle,luotao1/Paddle,yu239/Paddle,lispc/Paddle,yu239/Paddle,tensor-tang/Paddle,putcn/Paddle,putcn/Paddle,gangliao/Paddle,livc/Paddle,PaddlePaddle/Paddle,cxysteven/Paddle,chengduoZH/Paddle,putcn/Paddle,yu239/Paddle,emailweixu/Paddle,pengli09/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,hedaoyuan/Paddle,lispc/Paddle,hedaoyuan/Paddle,baidu/Paddle,emailweixu/Paddle,yu239/Paddle,reyoung/Paddle,reyoung/Paddle,Canpio/Paddle,putcn/Paddle,pengli09/Paddle,cxysteven/Paddle,tensor-tang/Paddle,chengduoZH/Paddle,pkuyym/Paddle,hedaoyuan/Paddle,Canpio/Paddle,lispc/Paddle,baidu/Paddle,yu239/Paddle,reyoung/Paddle,luotao1/Paddle,QiJune/Paddle,PaddlePaddle/Paddle,lispc/Paddle,livc/Paddle,livc/Paddle,lispc/Paddle,hedaoyuan/Paddle,pengli09/Paddle,QiJune/Paddle,chengduoZH/Paddle,livc/Paddle,cxysteven/Paddle,chengduoZH/Paddle,pengli09/Paddle,luotao1/Paddle,emailweixu/Paddle,putcn/Paddle,pkuyym/Paddle,QiJune/Paddle,reyoung/Paddle,lcy-seso/Paddle,luotao1/Paddle,gangliao/Paddle,Canpio/Paddle,emailweixu/Paddle,hedaoyuan/Paddle,baidu/Paddle,baidu/Paddle,reyoung/Paddle,baidu/Paddle,yu239/Paddle,lcy-seso/Paddle,emailweixu/Paddle,tensor-tang/Paddle,gangliao/Paddle,tensor-tang/Paddle,Canpio/Paddle,cxysteven/Paddle,lcy-seso/Paddle,cxysteven/Paddle,livc/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,gangliao/Paddle,emailweixu/Paddle,jacquesqiao/Paddle,luotao1/Paddle,Canpio/Paddle,gangliao/Paddle,pengli09/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,jacquesqiao/Paddle,livc/Paddle,tensor-tang/Paddle,chengduoZH/Paddle,pkuyym/Paddle,QiJune/Paddle,pkuyym/Paddle,reyoung/Paddle,cxysteven/Paddle,lispc/Paddle,lcy-seso/Paddle,pkuyym/Paddle,lispc/Paddle,QiJune/Paddle,pengli09/Paddle,hedaoyuan/Paddle,hedaoyuan/Paddle,Canpio/Paddle,yu239/Paddle,Canpio/Paddle,Canpio/Paddle,lispc/Paddle,livc/Paddle,luotao1/Paddle,putcn/Paddle,jacquesqiao/Paddle,yu239/Paddle,QiJune/Paddle,lcy-seso/Paddle,gangliao/Paddle,gangliao/Paddle,lcy-seso/Paddle,luotao1/Paddle,pkuyym/Paddle,hedaoyuan/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle