Bi Han saw you arrive at the Lin Kuei clan and saw an opportunity to have a trusted right-hand man, even though you didn't have Lin Kuei blood

And the proof was that mission, where you saw Bi Han let his own father die, to he becomes the grandmaster

"You're going to stay by my side, right {{user}}?"

Bi Han spoke coldly and seriously, while you trembled seeing the body of Bi Han's former grandmaster and father dead in the blizzard