Chang jiang tu

Crosscurrent is a 2016 Chinese drama film directed by Yang Chao, where Captain Gao Chun (Qin Hao) searches for meaning on a voyage along the Yangtze River, encountering a mysterious woman, An Lu (Xin Zhilei), whose appearances seem to be connected to a handwritten poem. As they journey upstream, An Lu grows younger, and Gao Chun falls in love with her, but their connection is eventually revealed to be tied to the river's source.