What's the name of the movie in which a Japanese woman marries a China man in World War II?

Sean (Maggie Cheung) grew up estranged from his mother and went out to study when he grew up. Because of my sister marriage immigration, I returned to my long-lost home, but the contradiction with my mother Kwai Zi (Lu Shi) became more and more serious. It was not until Sean decided to accompany her mother back to Japan to visit relatives that she really began to understand her mother's past. It turns out that during the War of Resistance against Japanese Aggression period, my mother went to the Puppet Manchukuo alone to take refuge in her brother, and met her father (Li Zixiong), who was a Kuomintang official and got married after the war and stayed in China. However, due to living habits and cultural differences, misunderstandings between my mother and my in-laws continue. Sean finally felt the loneliness and helplessness of his mother in a foreign country, and the mother and daughter realized communication and understanding during their visit to Japan.