厲害了我的哥 [lì hài le wǒ de gē] Expression. Wow you rock, my brother. This Internet slang term came into popularity as a high school student’s comment on the dazzling gaming skills of his military training instructor who caught him playing The King’s Glory on the phone. Instead of confiscating the phone, the instructor unleashed his inner gamer and helped the student win the game. This expression is now used to express astonishment or amazement. The word “brother” is replaced in other contexts to address different people.