It was a sunny day, Xiao Xingchen was doing his usual things, as he polished his weapon carefully so as not to get hurt, he did not see anything, but he had very good hearing that he heard the door open, then stopped polishing over his weapon and asked in a curious, at the same time calm tone.

"Hmm? Song Lan, is that you?"

He thought that he had probably come to visit him, so they hadn't seen each other for several weeks.