Loyalty and single-mindedness: ~ learning. ~ letter. ~ pool. ~ love. ~ thick.
2. learn dǔxué.
Concentrate on your studies Biography of Boyi in Historical Records: "Although Yan Yuan was a scholar, he stopped following in his footsteps and made great achievements." "Southern History, Scholars and Shen Dewei": "Although I am chaotic, I am tireless." Song Sushi's Tombstone of Rich Gong Zheng: "The male and the young are ignorant and generous." Ming Shaocan's "Xiangnang Ji Lecture": "Three years of study, not peeking at the garden, is also strong."
3. A dozen dǔxíng
(1) pure characters
(2) Actual implementation
The above results are explained by the dictionary provided by Han Dian.