It is a famous saying handed down by Zheng Banqiao during the Qianlong period of Qing Dynasty, and it is his own official and life situation. Later generations think that the word "rarely confused" is philosophical, so they hang it at home in the form of banners as a warning for daily life.

I have a well-thought-out plan, which comes from Shi's "Painting Bamboo in Valley Chinese": "So painting bamboo requires a well-thought-out plan first."