Question:  "what U need?"  is a single, recorded by which Chinese singer, for his debut extended play "Lose Control" , Zhang Yixing (born (1991--) 07, 1991 ), better known by his stage name, which is?
Sentence (from "What U need?"): It was pre-released on October 7, 2016 by S.M. Entertainment as a birthday gift for Lay's fans.
Relevant evidence: No