Small Village in Summer

Summer is here, and there is a very beautiful small village in the mountains. There are flowers, birds, and all kinds of cute animals in the small village. But I don't know why, suddenly one day, the small village became desolate, the flowers stopped blooming, the birds flew away, and all the small animals ran away... The village chief's grandfather was very anxious when he saw it. After investigating, he found out that it was... Purpose: The importance of cooperation