As the father of the cutest little devil Hu Ba, director Xu Chengyi kept a low profile in the first week of the film. Carrying a backpack, he followed the main actors south, from East China to South China, and everywhere he went was "Hu Ba Hu Ba". "Hu Ba" is a syllable that Hu Ba can only speak. This tone similar to children's babbling was originally conceived by director Xu Chengyi and screenwriter, and now it has become a popular happy story this summer. Xu Chengyi, who just returned to China a few years ago, can only speak a few simple Putonghua, advanced to familiar faces and mastered Chinese Pinyin and many local languages, and occasionally played a very grounded joke with the staff. This seemingly simple move determines the absolute direction of the film's punchline. When Xiao Huba was caught in the kitchen of Dengxian Building and Sebrina [Weibo] made a magnificent appearance with a northeast accent, people's laughter in the dark was all over the floor. This is another burning point at the end of the film.