C271 This old man is really weird

This old man is so weird

Liu Cheng looked at the black-clothed youth walking over with a palm-sized notebook in his arms, then asked the man: "What other missions do you have that month that have not been issued?"

The young man in black opened his notebook, scanned through it and said, "President, there is currently an [A] class mission and two [B] class missions!"

"[A] class, the mystery of