Lay Zhang
Zhāng Yìxīng (hangul: 장이씽; hanja: 张艺兴; born in Changsha on October 7, 1991) better known by his stage name Lay (hangul: 레이) is a Chinese rapper, singer, songwriter, dancer and actor. He became known after participating in a television program called Star Academy in 2005. He joined in EXO on January 2012, as main dancer, lead vocalist, sub rapper and visual member. In September of 2015, he published his autobiography, titled Standing Firm At 24, beating records of book sold more in its pre-sale.