JC-T himself also talked about this in the interview. Baidu Encyclopedia also has the following information:
In 2007, JC-T was admitted to the Sports Dance Department of Beijing Sport University. At the beginning of 2006, the "Ma Tuan" project was launched in Taihe Wheat Field, and JC-T was selected as a professional course of Beijing Dance Academy. On April 1 2007, he began to receive semi-militarized closed training. After four years of training, JC-T became a member of MIC Men's Team.