There are three main reasons why Xu Kai can become famous through "Story of Yanxi Palace". First, the character is lovable; second, the Qing palace drama has a brilliant appearance; the popularity of the three dramas drives the popularity.
The popularity of Xu Kai and Wu Jinyan in "Story of Yanxi Palace" is largely due to their likable characters. Fu Heng, played by him, is infatuated and dedicated, and his personality is cold on the outside and hot on the inside. The setting of such an infatuated male duo is outstanding in a romantic drama. Popular stars such as Lee Joon-ki and Kim Jung-hoon also became popular through this kind of lovable second male lead.
Secondly, Xu Kai’s appearance is very suitable for starring in Qing palace dramas. He is a rare actor whose appearance is better after shaving his head than with hair. Among those who are eight degrees uglier because of the Qing palace style In front of the actor, the audience's eyes lit up, causing them to get the handsomeness of the little brother. Many viewers even couldn't recognize Xu Kai's long hair when they saw him outside the play, which shows that this kind of role highlights his advantages.
No matter how lovable the third character is, no matter how good his appearance is, if the drama cannot become popular, then the actor will only be popular in a small area. This time, many actors in "Story of Yanxi Palace" suddenly became famous or became popular again. The most critical reason is because of the popularity of the show. "Story of Yanxi Palace" is not only popular in mainland China, but also relatively popular in Hong Kong, Taiwan and Southeast Asia. His popularity has greatly increased because of the wide audience range of the show.