According to the report of Creation Camp 20 19, Sebrina and Vin are very good friends. Vin said that when they were trainees together with Ivan, they agreed to debut together. It is known that Ivan is a trainee of yp, and so is Wen.
Moreover, in Vin's birthday video, while wishing him a happy birthday, Jackson Wang also said that Vin lived downstairs when he was a trainee.
According to the above two clues, we can know that Vin used to be a trainee of jyp, but later he did not stay in Korea to develop, but chose to return to China to continue his development.
Now Zhou Zhennan has gained a large number of fans through two programs, Son of Tomorrow and Creation Camp 20 19, and participated in many programs, large and small. His strength is so strong that he will surely shine in the future.