After passing the audition hosted by JYP Entertainment, he signed a ten-year contract with the company but later re-signed for an eight-year contract, not including training, and was brought to South Korea in 2006 as a trainee, being put into a class of 24 other students. Park Jin-young informed him that he was required to learn how to sing and to dance, learn Korean and Mandarin Chinese, and to bulk up. He first appeared through MNET's Hot Blood, a program that showed the intense physical training that 13 male trainees had to go through for the opportunity to debut in either a 4-member ballad group 2AM or a 6-member dance group (originally had 7 members until the leader Jay Park left the group) 2PM under JYP Entertainment.[2]