1, graphics, is a Chinese vocabulary, pronounced dǔxué, which means to concentrate on learning.

2. Source:

(1) Biography of Boyi in Historical Records: "Although Yan Yuan was a scholar, he followed suit and made a difference."

(2) "Southern History, Scholars, Shen Dewei": "Although chaotic, I am tireless in learning."

(3) Stone Tombstone: "The young and the old are ignorant and generous."

(4) Ming Shaocan's "Lecture on the Fragrant Sack": "After three years of study, I am also strong."

(5) Biography of Chen Yuchuan in the Ming Dynasty: "Learn from the Expo and learn from the number of images."