Badu's Homework

In a mountain tribe primary school, after the classroom teacher mentioned the story of millet and the aborigines, Badu suddenly raised his hand and asked, what is millet? So the teacher gave everyone a homework assignment to find out what Xiaomi is really like. Badu went home and asked the adults, where is the millet field? The adults said that there had been no millet fields for a long time, and even scolded the teacher for being boring. In order not to disappoint the teacher, Badu decided to go to Xiaomitian with his best friend Ivan...