C37 Feather's Weaknesses and Mission Completion

Yu left the tomb with his heart and returned to report his mission to Yu the Great. However, on the way, the Black Dragon Bow suddenly said to Yu Wei.

"Stupid master, how did you know that I was controlled by the Zombie?"

When the Black Dragon Bow was under the Zombie's control, it could actually observe the scenery outside, but she could neither speak nor give Yu Yu any hints