What does bamboo bud mean?

Bamboo Bud satirizes the powerful ministers during the Qianlong period. Little Shenyang asked Ji Xiaolan to write a plaque. Ji Xiaolan doesn't want to write it. After thinking about it, he wrote the word "bamboo bud" to Xiao Shenyang. Little Shenyang ordered craftsmen to make gold plaques and hang them on the main hall. One day, Emperor Qianlong had nothing to do, and strolled to the home of Xiao Shenyang. Little Shenyang pointed to the plaque hanging on the wall and said to Emperor Qianlong, "The words on the plaque were written by Ji Xiaolan, a great scholar." After listening to this, Qianlong "laughed" and then said: the word "bamboo" can be broken down into the word "each"; The word "bag" can be broken down into the word "straw bag", saying that your family is all "straw bag" and you are half dead with anger.