I hold the view of "economic reasons". Cao Xueqin's grandfather, Cao Yin, is proficient in poetry, drama and calligraphy, and has a profound cultural upbringing and extensive cultural activities. At that time, the Cao family enjoyed unprecedented prosperity. However, due to Cao Yin's daily ostentation, entertainment and gifts, especially Kangxi's six southern tours and four driving receptions, it caused a huge economic deficit to Cao Yin.
The emperor came and lived at home. What is the cost of this home? Just like the sixteenth time in A Dream of Red Mansions, it is said that Yuan Chun is going to visit his mother, Wang Xifeng and Jia Lian. When he said this, Jia Lian's wet nurse, Zhao's mother, was nearby. Oh, you missed that. When the sage made a southern tour, he said that the Zhen family in the south of the Yangtze River had traveled alone for four times, and the money was spent like a drop of water into the sea. It really is. Therefore, four expeditions to the south and one visit to the Jia family could not be sustained.