Although set in Japan, not China, Silk (2007) is otherwise very similar to your description. https://www.imdb.com/title/tt0494834/?ref_=tt_urv
View QuestionLady in the Car with Glasses and a Gun (1970) https://www.imdb.com/title/tt0065957/?ref_=tt_trv_cnn
View QuestionMost of your description fits Bangkok Dangerous (2008) https://www.imdb.com/title/tt0814022/?ref_=hm_rvi_tt
View QuestionThe Time Machine (1960) - remade in 2002 https://www.imdb.com/title/tt0054387/?ref_=nv_sr_srsg_3
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