Ash Is Purest White (2018)

Opening in 2001 in Datong, a former coal mining town, Bin was a mob gangster of Jianghu and when the leader was dethroned he takes over. Qiao loves Bin very much and one day to save Bin from henchmen she uses his pistol and fires it fakely. She gets arrested and imprisoned for 5 years, never being visited by Bin. When she is released she reaches out to Bin who has no interest for Qiao and is in love with another girl. 16 years later she gets a call from Bin who is in need of moral support.