Qingya and Li Rui walked into the study, which was filled with a faint scent of sandalwood. The bookshelves were filled with all kinds of books, and the room was so quiet that they could hear each other's heartbeats. In the middle of the room was a large desk piled with files and letters. Qingya approached the desk and flipped through them casually, trying to find Li Chengqian's secret letter.

"These letters are all those Li Chengqian has received recently. Let's start with the most recent one." Qingya said, her voice low for fear of being heard by others.

Li Rui carefully flipped through the files on the desk, looking for other clues that might be useful to them.

Suddenly, Li Rui pulled out a secret letter from a pile of files. He read it carefully, and his expression gradually became solemn.

"Qingya, look at this." Li Rui handed the secret letter to Qingya.

Qingya took the secret letter and read it carefully, her brows gradually wrinkled.

"This...this..." Qingya's face was solemn. She felt a chill approaching her bottom.

"What's wrong?" Li Rui asked, his tone a little nervous.

"This is a secret letter of collusion between Li Chengqian and treacherous officials. The letter records in detail Li Chengqian's plan to launch a mutiny." Qingya said, her voice trembling. She did not expect Li Chengqian to be so bold and presumptuous.

"When are they going to launch a mutiny?" Li Rui asked, his eyes filled with worry.

"The secret letter says that they are preparing to launch a mutiny in three days. They plan to hold a banquet in the palace and take the opportunity to assassinate Li Heng." Qingya said, her tone full of worry.

"Three days... We must tell Li Heng this news as soon as possible to stop Li Chengqian's conspiracy." Li Rui said, his eyes full of determination, and he clenched his fists.

"No, we can't tell Li Heng directly. Li Chengqian has already set a trap for him. As long as he tells Li Heng directly, Li Chengqian will take this opportunity to act in front of Li Heng, making Li Heng relax his vigilance against him and continue to implement his plan." Qingya said, her tone full of worry.

"Then what should we do?" Li Rui asked, his eyes filled with anxiety.

"We must think of a way to make Li Heng believe Li Chengqian's conspiracy, but not let Li Chengqian notice it." Qingya said, her eyes full of determination. She must come up with a perfect way to expose Li Chengqian's conspiracy and protect Li Heng's safety.

"Qingya, you are so smart. Do you have any plans?" Li Rui said, his face full of anticipation.

"Well, there is a way." Qingya smiled slightly, her eyes full of confidence, she had thought of a perfect plan.

"What plan?" Li Rui asked curiously, his eyes full of anticipation.

"It's decided to take advantage of the situation." Qingya said, her tone was steady, but her eyes were full of strategy.

Li Rui was stunned for a moment. He didn't understand Qingya's meaning: "Take advantage of their own tricks? What do you mean?"

Qingya explained: "Li Chengqian is greedy by nature, and he always wants to get the throne. They took advantage of this and made him think that he could ascend to the throne smoothly with this secret letter, thus speeding up his actions and eventually forcing himself into a desperate situation."

"But what if he finds out that we are using him?" Li Rui said worriedly.

"It doesn't matter," Qingya smiled confidently. She looked into Li Rui's eyes and continued, "What we need to do now is to make him believe that he is the one with the best chance of winning. We will use our reading skills to place spies around Li Chengqian and monitor his actions. At the same time, we will use the people around Li Chengqian to create false 'support' information, making him mistakenly believe that he has obtained most of the support, thereby accelerating his actions."

After listening to this, Li Rui's eyes were full of admiration: "Qingya, you are so amazing!"

"That's not enough." Qingya shook her head and said softly, "We need to make him believe that he can get the throne. We must make him absolutely hate Li Hengchan and make him believe that Li Heng is a cowardly, incompetent, and ineffective monarch. Only then will he act more firmly and confront us more actively."

"So what are you going to do?" Li Rui asked. He was full of curiosity about Qingya's plan.

Qingya raised her lips slightly, and said confidently: "I will let Li Chengqian see what he wants to see."

After Qingya and Li Rui discussed the specific plan, they began to act. With her ability to read sutras, Qingya quickly found two trustworthy people who were close to Li Chengqian, namely Li Chengqian's chief guard and his personal eunuch. They were all loyal to Li Chengqian, but hated Li Heng.

Qingya found them one by one, used words to seduce and exchange benefits, so that they became her spies and provided her with information about Li Chengqian's movements. Li Rui was responsible for spreading some false news, making Li Chengqian believe that he had the broad support of court officials and the people. At the same time, he would also create some "unfavorable" information to make him hate and be dissatisfied with Li Hengchan, making him more eager for the throne, and ultimately leading him to make more reckless decisions.

Qingya and Li Rui used the resources at their disposal to carefully weave this huge trap, waiting for Li Chengqian to fall into it. They believed that Li Chengqian would eventually be completely defeated in this carefully designed game.

"Li Chengqian, just wait to be used by us." Qingya said softly, her eyes full of confidence and her lips slightly raised, as if she had already seen the day when Li Chengqian would be defeated.