What does TROT of Super junior mean? How to pick out a few people? Where's Geng Che?

TROT is a Korean folk song, which is generally liked by older uncles and aunts. Like KRY, SJ-T is a part of SJ, just like two small groups in a big group. Because he is a powerful singer, TROT is a folk singer, and both the car and prodigy are suitable for this style. As for Geng, he should not take a similar combination route. SM let Geng join SJ in order to open the China market more easily. Geng seems to have said that there is a movie to shoot, but I don't know the details yet. I just hope SM Company can make a good plan for Geng.