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 "Ciara discography"): Ciara also participated in a number of successful collaborations, including US top five hits "Lose Control" with Missy Elliott, and "Like You" with rapper Bow Wow, as well as the US top ten "So What" with group Field Mob.
Relevant evidence: No