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Director? Starring Ceng Zhiwei? Ceng Zhiwei Chen Baixiang Lin Junxian Lv Liangwei Xu Guanying Chen Yalun

About the plot? Bowling? Flower branch? Want to break the sun? Princess king? Shake fast? These five people are brothers. This time they took part in a tour group in Thailand and were introduced by the tour guide Begogo to visit the local doctor. They don't want to meet a mountain thief to rob the elixir. The imperial doctor escaped and became a fool. Five people were forced to try this medicine. Except bowling, the other four people have become children. After the five people returned to Hong Kong, they temporarily stayed in bowling. Four children came to the school of Wang, Hua Zhitu's favorite teacher. During their school days, Hua Tu exposed the trick of Xiao Bai, an unscrupulous boyfriend around Mr. Wang, and drove him away. The wife torpedo boat of bowling girlfriend Betan Tong Tianming found that four people's accounts were controlled by one person, but four people didn't know what to do. After some unreasonable troubles, the misunderstanding was finally clarified. Teacher Wang also knows the secret of four people becoming children. The doctor came to his senses and prepared the antidote. Bego came to Hong Kong with the antidote, and didn't want to be kidnapped by the little white flour who was secretly waiting for revenge. He and a gang of gangsters asked five people to redeem the antidote with money. After a fight, Xiao Bai swallowed the antidote and became an old man in a flower shell. Then he took the last bottle of antidote and told each other.

I hope it is the movie you are looking for.