"The Empress discovered a secret tunnel under Chenyuan Palace by accident. She never told anyone about it. She even killed the maid that discovered the tunnel with her and accompanied her in walking through the tunnel. In other words, she was the only one who knew about it," Ning Xueyan explained.

This was the Empress' secret. To prove it, she used Yun Luoluo's incident as an example. When Ning Xueyan was drugged in Chenyuan Palace, the Empress wanted to take her to a room. ...