At that time, Cai Yong was famous for his brilliant talents and was highly valued by the imperial court. Frequent visiting cars and horses are crowded with guests. Cai Yong heard that Wang Can came to visit him at the door, and hurried to meet him, dragging his shoes and rushing downstairs. When RoyceWong appeared, he was young and short. Cai Yong's respect for an ordinary young man surprised all the guests. Cai Yong said, "This is the Prince. I can't compare him with a wizard. All my books and articles should be given to him. " The word "Yao" is a noun, which is synonymous with "shoes", that is, shoes. )

"Welcome guests with shoes", "Welcome guests with shoes" and "Welcome guests with shoes" are all descriptions of the eagerness to welcome guests. Later, it is generally said that it is "reverse encounter with shoes", or "reverse encounter with shoes" or "reverse encounter with shoes".