[IF YOU ARE LOOKING AT THIS THREAD THEN YOU MUST BE IN A SITUATION SIMILAR TO ME]
I am also born in overseas, British Citizen with passport, with HKID(***), WITHOUT HKSAR passport and do not satisfy the Chinese Nationality Law to become a Chinese Citizen, because according to the CNL:
[Article 5: Any person born abroad whose parents are both Chinese nationals or one of whose parents is a Chinese national shall have Chinese nationality. But a person whose parents are both Chinese nationals and have both settled abroad, or one of whose parents is a Chinese national and has settled abroad, and who has acquired foreign nationality at birth shall not have Chinese nationality.]
I am currently in the process of applying for HK Chinese Nationality and passport, WITHOUT RENOUNCING BRITISH PASSPORT, with my immigration lawyer. This is a technique thing and should be completed in 2-3 months. Therefore I will be able to keep and use both British & HKSAR passports. I will keep everybody updated.
If you have any questions please forward them to me.
Thanks.