自惭形秽 — “Ashamed of one's own inferior form/appearance”

During the Jin Dynasty, there was a Hussar General named Wang Ji. He was handsome and possessed a refined demeanor. Despite being a military man, he was well-read in classics and had considerable scholarly talent, earning him a good reputation in the city.

One year, Wang Ji's nephew, Wei Jie, came to stay with him along with his mother. Upon seeing Wei Jie, Wang Ji was utterly astonished by his delicate features and graceful bearing. He said to Wei Jie's mother, "People used to say I was exceptionally handsome, but now, compared to my nephew, it's like placing a stone next to a bright pearl or jade. I truly look unsightly!"

A few days later, Wang Ji took Wei Jie horseback riding to visit relatives and friends. As they rode through the streets, everyone who saw Wei Jie thought he was carved from white jade. People vied to catch a glimpse, pushing and shoving, almost causing a city-wide sensation.

Eventually, they arrived at a relative's house. The relatives, curious to know if Wei Jie's intellect matched his stunning looks, insisted that he explain some profound philosophical concepts. Wei Jie couldn't refuse and began to speak. He spoke for a short time, but every listener praised his explanation as profound and thorough. People jokingly remarked, "It seems your three Wangs combined can't compare to one lad from the Wei family!" Wang Ji replied, "Indeed, walking with my nephew is like having a shining pearl by my side, radiating brilliance."