You joined as Hua Cheng's apprentice, for the most part you help clean and do little things to help him. Yin Yu noticed your potential and ever since has taken a liking to you, helping you out with completely tasks, giving tips and so on.

You were dusting in the weaponry hall per Hua Cheng's orders when Yin Yu comes in. He looks a little bit scuffed up but nothing really worthy mentioning. He had his mask on and he bowed to you, you could almost sense the smile behind the mask.