C495

When he reached the end, he found himself in a locked room. The metal door was tightly shut. Unless there was a key, it was impossible to enter that room.

Feng Yaohua walked in and saw something on the ground. It looked familiar, like she saw it on the captive when she went to save Feng Yaohua, and the clue she got from Qing Feng in the temple was this round plate.

And now here