Nan Jing de ji du (1995)

Ryuichi Okagawa is a Japanese writer who worked as a reporter in China and has been sick ever since his return home. While in China, Okagawa had met a devoutly religious girl named Jin-Hua. Okagawa was born with a predisposition to agonizing recurrent migraines, but found happiness with Jin-Hua and married her. Unfortunately, he already had a wife in Japan, and this revelation crushed Jin-Hua. When Okagawa returned home, leaving Jin-Hua behind, she was forced to work as a prostitute, catching both a severe case of the flu and a rather less socially acceptable condition. Meanwhile, Okagawa's guilt has torn him apart enough for him to return to China in an attempt to bring Jin-Hua home with him to get medical attention, but the girl is already too far gone for his help.