Echo (2022)

In 1990, college student Ing, who accidently gets pregnant, returns to Lishan to spend the summer with her father. Ing notices the conflicts between her father and the farmers. She meets a young farmer Wen, and affection slowly grows between them. As summer ends, Ing leaves, and no one knows what the future will hold. To promote a new fertilizer, Ing's father gets a hot-air balloon, but hard as they try, it just can't fly.