Zhu ZhengTing (Chinese: 朱正廷, Korean Stage Name: 주정팅), also known as Theo Zhu, is a Chinese singer and a member of the boy group NEX7 under Yuehua Entertainment.
In 2017, ZhengTing, along with fellow trainee and now groupmate Justin, participated in Mnet's Produce 101 Season 2 as part of the Yuehua Entertainment trainees. He ranked 51st and was eliminated in episode 8.
In early 2018, he took part in iQiYi's Idol Producer, where he achieved sixth place, securing a spot in the group Nine Percent.
On June 21, 2018, he debuted as a member of Yuehua Entertainment's new boy group NEX7.
He made his solo debut on September 23, 2019, with the mini album titled 'Chapter Z'.