The filming locations of "The Richest Man in the West Rainbow City" are Xiamen, Jinjiang and Penglai.

The most concentrated filming location of "The Richest Man in the West Rainbow City" is in Xiamen, like Xiamen's People's Stadium, Jimei Bridge, and Fantasy Kingdom of Xiamen are all mentioned in the movie. Shen Teng's Wang Duoyu's opening game was held at the People's Stadium near Xiamen's Douxi Road; the "Dongmei Bridge" in the movie is actually Xiamen's Jimei Bridge, and the movie also features Xiamen's Fantasy Kingdom, Xiamen's Pisces Island Bridge, and Zhangzhou City's Changtai County's Mayangxi Tourist Area.

Also in the movie, Wang Duoyu took the team to the castle, where the castle was filmed in Penglai Wencheng Castle in Shandong Province, which is located in Liujiagou Xiexi Village in Penglai City, Yantai, Shandong Province, and is a typical castle building.

Behind the scenes

"The Richest Man in the West Rainbow City" is a remake of the 1985 movie "Brewster's Millions", and it took Yan Fei and Peng Daimo two years to conceptualize and write the script. Yan Fei and Peng Daimo's initial idea was to make up a place name to tell the story, which can avoid the risk of reality, but also generate creative joy. They came up with the idea of naming the place Xihong City, which is both memorable and interesting.

In the process of writing the script, the protagonist in the original script was a baseball player, which was changed to a soccer goalie for the film. At the same time, the original movie used burning money to buy votes and lose it all by running for mayor, governor and president that way, while the writers wanted to devise a Chinese way of spending money and hurt their heads a lot about it.

In the beginning, the director wanted Shen Teng to lose weight, so Shen Teng went to the gym to get a card, hire a personal trainer, and run 5 kilometers a day, but the result was that his ankles and hips were injured and he couldn't exercise, so he let Shen Teng put on some weight, and he had to keep his weight around 163 pounds. Zhang Yiming in order to adapt to the needs of the role of the fat man, the stomach are propped up obesity lines, and finally weighed more than 40 pounds.