The short film "Father" tells the story of a father and his mentally retarded son

I have also watched this one, which is the micro-movie "Harmonica"

Plot: It tells the love and hardships a father pays for his autistic son, once again a touching story. The father's love story was brought to the screen, igniting the audience's tears. A father who lives in a hutong thinks that his autistic son may be a musical genius and tries his best to let his son learn the harmonica. Therefore, the father works hard to make money to support his son to learn the harmonica. In the process of his son learning the harmonica, he not only meets a man who cannot teach the harmonica. As a music teacher, my father also suffered countless looks from outsiders. The father and son who had difficulty communicating gradually developed conflicts, but in the end they understood each other through music.