C641 Be Psychologically Prepared

Seeing Dr Ma's sincere expression, Zhang Wen handed the key in the box to Dr Ma and said, "You stingy old thing, you have to be careful when opening it. This is a treasure that I have been collecting for decades."

Dr Ma took the ancient key and inserted it into the lock. He smiled and said, "Old Zhang, you still dare to say I'm stingy? Every time I come, I only see some ordinary goods. Today