Taxiya. I hate to disagree with you. I'm not sure if you are interpreting the above correctly.
I'm holding I'm hand a Chinese passport in my name. And it clearly differentiate my Chinese passport and those from the mainland.
Furthermore, I can't enter China proper without further paperwork. So in all intend and purposes. It is like a BNO. and as such I called it CNO.
I could show more from inside, but obviously I won't.
By issuing this passport to me. And I hold a full British passport. And a holder of
HK ID card. It is clear I'm a duo national. But I can also stand for election in HK because of my birthright and ID card.
Now, as I understand it. China does not allowed duo nationality, but clearly I'm.
That is because my "Chinese passport" is not the real thing!
That's my finger and thumb and my coffee table. Lol
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your passport give you privilege in entering other countries, just like a diplomatic or official passports give privileges to some Chinese nationals. But they don't make differences in terms of citizen right. My parents used to have official passports. The only thing matters is the first inside page baring "The Ministry of Foreign Affair of PRC......"
Your Chinese passport is real in the view of China including HK immigration authority. Your British passport if it was acquired through the UK scheme I mentioned, no matter how real, is void in the view of China (HK included) , see the point 3 of HK immigration authority's explanation. If you acquired the British passport through other means, you are obliged to renounce your Chinese citizenship, before doing so you are still Chinese and be treated as such. The British passport has no effect in China (HK included).
Your entering mainland China needing further paperwork is equal to the paperwork for any Chinese citizen to settle in a new Chinese city. The paperwork is not a visa but only administration work. If that can be called CNO, then every main-lander is a CNI (Chinese National Insea)
.
If China, one of your two citizenship, denies your duo citizenship, how could you be duo?
I mean, duo citizenship and its related right and obligation are not something an individual can declare or claim to posses. Or if you prefer to claim so, there is almost nothing in essence left.
In practice, UK can not provide consulate assistance to you when you are in China (Hong Kong), that nullified anything you may think you have from the duo citizenship. When you are in UK, you can not ask the same assistance from Chinese embassy without revealing your British citizenship (UK police will only let China involved if you show your Chinese passport), in return you may be stripped your Chinese citizenship. In a third country, you can only ask help from one, but not two. In effect, the duo citizenship does not exist. Does it?
Two examples, my friend acquired a foreign citizenship without notifying Chinese government, he managed to visit China using his foreign passport for years until recently. He was denied to leave China after being found out to hold a foreign passport. He was ordered to finish all paperwork to de-register, surrender his Chinese ID and passport. It took him a week. He did not receive any further fine or charges because he has not unfinished legal proceedings. If he had properties in China, the change of ownership registration would have taken even longer time for more paperwork.
I don't want to spook you, but the other example is uglier. A person by the name "Huseyincan Celil" was charged of crime in China, before being caught traveled to Canada and acquired Canadian passport, caught in Uzbekistan later then deported to China and trailed. Canadian embassy was denied access to him. The argument China gave was that the person was still Chinese citizen as far as China is aware because the person didn't renounce his Chinese citizenship.