Mangshan thief: It shows that parents should educate their children from an early age, cultivate their children from an early age, and educate their children with good knowledge that is beneficial to their health.
Painting a dry son: refers to educating his son to read with calligraphy and painting on the ground, which is used to praise the mother for teaching her son well. The source "Biography of Ouyang Xiu in the History of Song Dynasty": "My family is poor and I would like to draw a geography book".