Liu Yijun (Chinese: 刘义军 or 刘义君; pinyin: Líu Yìjūn), also known as Lao Wu (Chinese: 老五; pinyin: Lǎo Wǔ; lit. "Old Five") is a Chinese musician and artist, best known for his work as the former lead guitarist for seminal Chinese progressive metal band Tang Dynasty. He is often regarded as China's first guitar hero.