In the novel Jiang Yi read as a girl, she turned out to be a cannon fodder, doing all kinds of evil things including eating and drinking, and brought trouble to the entire family.
Jiang Yi:... What else can I do? Just study! Is it possible that he still works in the fields?
It is impossible to go to the ground, so the only way is to study.
Purpose: To contribute to the country's educational undertakings