Is the ambassador of the British Embassy in China a resident of China?

Not exactly. According to Wikipedia, China residents refer to individuals who have a domicile in China or have no domicile in China for one year, while diplomatic immunity refers to a special right enjoyed by diplomatic representatives and embassy and consulate personnel in the host country, so that they are not subject to the judicial jurisdiction and administrative management of the host country; Therefore, the Ambassador of the British Embassy in China is not a resident of China, because he is a British diplomatic representative and enjoys diplomatic immunity and is not bound by the laws of China.