"Silly girl, the mechanisms your master made aren't so easy to find. Even the switches in this little study aren't easy for ordinary people to find. Even if you move the bookshelf, most people wouldn't be able to tell that there's a secret passage inside."

"Master Ji Yuan is truly amazing."

"Of course, my master is the most skilled person I have ever seen in terms of mechanical calculations."

Chen Jingshu lowered her head and pondered, "Alright, stop looking so gloomy. I've already made some progress on the secret passage."

Upon hearing this, Chen Jingshu immediately perked up, as if she had found the answer right then and there.

"Last time, I took the opportunity to tour the palace. There was a rather remote and desolate palace there. According to my master's records, I guess that's where my master's wife lives."

"When I passed by that place, I asked Eunuch Li. He said that there was once a concubine who went mad and committed suicide. She looked cruel, and no one dared to go there, so it became desolate."

"So you think the secret passage for Master and Mistress's tryst must be in their residence?"

"Jing Shu is truly intelligent."

"It's just that Master deliberately built his residence to be very large, but now it's being used as a granary. It's heavily guarded, and it's quite difficult to get in."

After pondering for a moment, Chen Jingshu had a flash of inspiration.

“Didn’t you say that the mechanisms here are interconnected? Since it’s difficult to go directly, we can use this room or the secret passage on the moat to find the room where Master lives.”

Yan Shaoheng suddenly realized what Chen Jingshu meant and gave her a quick kiss on the cheek.

"Jing Shu is truly my lucky star."