Qin Haodong thought for a long time but still didn't find the key to the problem.

When Nalan Wuxia saw that he was silent, she asked, "What are you thinking?"

Qin Haodong said, "I seem to have found the key to the case, but I can't figure it out."

Nalan Wuxia said, "We also need luck to solve the case. Go back and rest first. You can continue to investigate at Guangren Hospital tomorrow. I think the key is there."

Qin Haodong nodded and ...