Why did Detective Chinatown 3 mention Suihua?

Because the protagonist Katsumi Watanabe grew up in Suihua.

Katsumi Watanabe is an orphan of the Japanese invaders. He was raised by local villagers in Suihua City, Heilongjiang Province, China, and finally abandoned Kobayashi and Xingnai and returned to his hometown in Japan.

For the right to use the new Chinatown in Tokyo, the Japanese gangster Katsumoto Watanabe and Su Chawei, president of the Southeast Asian Chamber of Commerce, held the last negotiation in a tea room. But Su Chawei died strangely, and all the evidence points to the murderer Watanabe. When leaving the court, Watanabe entrusted detective Qin Feng and Tang people to investigate the truth of the case and was finally acquitted.

Extended data:

The scene of Junichi Watanabe winning the case in court is extremely profound, but full of emotion and helplessness. The complex psychological expression of wanting to protect her daughter is incisive. When people around him are emotional, he still maintains the power of shock and awe.

When the scars left by the war were uncovered, the audience watched anxiously to understand what the theme in the film really wanted to express. Too heavy, too deep, too helpless. He found his daughter through a birthmark, but others thought he was only lustful to one woman.

Watanabe returned to Japan from China when he was young, but he asked his father for money and wanted to send it to his wife and daughter. However, Watanabe comes from a special family. Marriage is not love, but interest. Watanabe should take on more responsibilities and inherit the family business. His father forbade him to make out.

Watanabe's father gave him a sum of money so that he could break up with his mother and daughter and marry another woman. Watanabe's victory was helpless, and he had no choice. Junichi Watanabe expressed his helplessness, confessed to his daughter, and substituted the audience into the wild and cruel era after the war, which made people think deeply. Especially the last kneeling, shocking and full of profound meaning.