No reason for that as it is a New Zealand company. The CAAC will honour most country's licences; in fact their English ATPL exam had been created by an Australian company.
As far as I am aware you are wasting your time with a CPL. You must have a Chinese national licence within six months of flying in China. They do not do an English version of the Chinese CPL exams so unless you are fluent in Chinese reading and writing you are wasting your time.
Also you have to be sponsored by a Chinese company so any helicopter company operating in China has to have a partnership with a Chinese company. It may be a sleeping partnership but nothing moves without their sayso.
Attitude, attitude, attitude is the only way to work in China. It is their country and they are proud of it so you have to go along with them. Experience teaches you the way to ease them out of bad habits but if you try and ram anything down their throats you are looking at an early exit.
Best of luck.