The normal and probably the only way to get a Chinese ATPL is after you have been accepted by a Chinese company. Then, they will go through the the procedure for you to get your Chinese licence.
They will have an entire department to do this for you and their national pilots. Everything is administered in Chinese. They exams may be in English but getting to do one is not. Another drawback is the medical examination, a list of things done in one hospital and another done by CAAC doctors at either an airline HQ or a CAAC hospital.
Try as you may you cannot do it by yourself even if you were a national Chinese.