Xiaoming and his grandmother beat their waists and wrote 50 words.

On Sunday, it was sunny. Xiaoming is reading in the yard, while grandma is sweeping the floor. Grandma said, "Oh, I'm so tired!" Grandma beat her waist. Xiao Ming saw it and immediately ran over and said, "Grandma, let me help you!" " "Grandma said," good! "After playing for a while, Xiao Ming said to his grandmother," I'll help you sweep. Do you want to sit down and have a rest? " Then Xiao Ming began to sweep the floor seriously. Grandma said happily, "Xiao Ming, you are really a capable child!" " "Xiao Ming smiled happily.