Desc: So long and thanks for all the fish: Directed by Haoyu Wang. 2019, in a small industrial city in western China, Zangzi, a second-year high school student, was required to suspend schooling. His parents set free caged animals every day, believing that Buddhism can solve their child's psychological problems, while only provoked Zangzi's rebellion. Two years later, when the 2021 College Entrance Examination results were released, Zangzi was at a turning point in his life. The family sent him to the city where the university was located, looking for a river to set fish free once again for him. By participating in and recording three set-free events, the director tried to reach the core of the problem that everyone in this family was avoiding.