Why do you want to name Xu Beihong "sad"?

Mr. Xu Beihong, the master of art, was originally named Xu Shoukang. At the age of six, I read four books and five classics with my father, and then I learned painting. After he was seventeen, he worked as a painting teacher in three schools in his hometown. These three schools are more than 30 miles away from his home. Because his family is poor, he always walks back and forth and never wants to go for a ride by boat. Because there is no money for him to study at home, Xu Beihong has never been to a formal school, so he can't talk about his education and diploma. Therefore, he is often given the cold shoulder.

On one occasion, Xu Beihong went to a relative's house for a wedding reception. Many rich children wear silk clothes, but Xu Beihong wears a cloth for divination and is laughed at by others. From then on, he was cynical and determined not to wear silk clothes. In order to make a living in society, he wants to go to school in other places, but his father can't afford it. So he borrowed money from others, but no one looked down upon him as a "poor boy", which made him feel gloomy in the future and miserable in the world, and he could not help but feel sad, like a swan crying, so he changed his name to "Sad Hong". Since then, he has been pretending to be sad and angry, and finally became a master of art.