A good friend who protects crops

? Xiaoming went home happily. On his way home, Xiaoming saw a man. He caught a lot of frogs and a bag. Xiao Ming saw it and ran over at once. He said to the man that frogs can protect crops. Why did you arrest them? The man said, I catch frogs and sell them for money. You have no money. Go! Xiaoming ran home at once, put down his schoolbag and took out all the money in the piggy bank. Then he bought the bag of frogs. Xiaoming put the frog in the pond. Xiao Ming was very happy when he saw it, so that frogs could protect crops again.