It's not that girls can't take the initiative; as a British (or American?) film, since you want to relate to the Chinese background, you must choose a traditional Chinese girl character of the right age. As a girl, you can really be whoever she wants to be, and do whatever she wants, but if you put it here, you will lose the authenticity of the background. Otherwise, the heroine that the audience gets is a blunt Asian character, with no vitality and no background; if the audience at this time still thinks he is a Chinese girl, then the description of bitch is very appropriate
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