the father want him to 隐姓埋名 one
so as to protect him from Na Hong Ran
bcos he knows Na Hong Ran is going to destroy them (all his
sons.......)
he needs to keep him as "stand-by"
just now at the party he oso got say he shd not be bothered abt
the "younger" bro but shd try to help the hyung (elder bro)