What is brother Kao? jpg？

".jpg" is a picture format, and "Kao Ge. Jpg "means Kao Ge's picture expression pack.

"The elder brother of the exam. . Jpg "comes from the famous Japanese seiyuu Takahiro Sakurai. Because some media always misinterpreted his name as Kaohong Sakurai, China netizens nicknamed him Kao Ge.

Source:

The expression pack originated from a program. When many seiyuu talked about the relationship between characters and seiyuu, Kao Ge called on fans to "stop associating characters with seiyuu!" Because some people often raise the likes and dislikes of the role to seiyuu himself, and also bring some things of seiyuu himself into the role. This appeal of Kao Ge is also the voice of many seiyuu.

Because of Kao Ge's appeal and his exaggerated expression, fans made this passage into an expression pack and went crazy.