Episode 37 recap: Xue Yuan made up his mind to rebel.

Last night, after Xie Wei and Jiang Xue Ning had a physical relationship, Xie Wei proposed to Jiang Xue Ning. However, when Jiang Xue Ning didn't give him an answer, he thought she didn't want to marry him, which was the real reason he avoided her.Xie Wei stood outside Jiang Xue Ning's door, hesitating. Suddenly, Jiang Xue Ning opened the door and questioned why he was avoiding her. Xie Wei candidly revealed the reason, and Jiang Xue Ning told him that she didn't agree to marry him because she hadn't made up her mind yet on how they would get along after marriage.

You Fang Yin was taken to Xingwu Guard, and Xue Yuan had already given Zhou Yinzhi a deadly order to find criminal evidence against Xie Wei. So Zhou Yinzhi told You Fang Yin that as long as she revealed what Jiang Xue Ning made her do, he wouldn't make things difficult for her. However, You Fang Yin refused to do anything that would betray Jiang Xue Ning. Zhou Yinzhi, determined, resorted to torture against You Fang Yin, who endured the pain but remained silent.

Lv Xian was discussing the dangers of returning to the capital with Sword Book when he received news that the Xingwu Guard had taken You Fang Yin away. Jiang Xue Ning immediately realized that Zhou Yinzhi had betrayed them. Regretting not having eliminated him earlier, she was comforted by Xie Wei, who told her not to blame herself. She was inherently a kind-hearted person, and even if she knew something like this would happen, she wouldn't be able to handle someone like Zhou Yinzhi before he turned traitor.

To save You Fang Yin, Xie Wei and Yan Lin discussed and decided to return to the capital as soon as possible. Meanwhile, in the court, Xue Shu, following his father's instructions, was testing the emperor's attitude. The emperor believed that Xie Wei and Yan Lin had settled the issue with Dayue Kingdom and eliminated the threat of the Prince of Pingnan, so they deserved credit. The emperor didn't want to punish them. After hearing this, Xue Shu sent a message to his father, saying, "Time is running out."

He also gave the emperor a cloud-shaped ointment with poisonous ingredients that his father had provided. The next day, during the court session, Gu Daren presented a petition to the emperor, requesting amnesty for Xie Wei's forged decree. As for the Yan family father and son, their charges were fabricated by Xue Yuan, so they should also be granted amnesty. Gu Daren's words coincided with the emperor's thoughts. However, before the emperor could make a decision, he suddenly started coughing incessantly and coughed up blood, leaving everyone in disbelief.

The Empress Dowager learned that the emperor's condition had worsened and immediately suspected Xue Yuan's involvement. She called Xue Shu and asked her what she had done to the emperor. When Xue Shu tried to defend herself, the Empress Dowager became so angry that she wanted to slap her. However, just as the Empress Dowager called for someone, Xue Yuan walked in through the door.

Xue Yuan explicitly told the Empress Dowager that Xie Wei was his son, Xue Ding Fei, and that the child now harbored deep hatred for them. He pointed out that the emperor didn't even punish him for the forgery of the decree. If they didn't take action soon, when he revealed what happened in the past, they would be doomed. Although Xue Yuan was eloquent, the Empress Dowager believed that the emperor was still her son. In response, Xue Yuan coldly reminded her that the arrow was already on the bowstring, and Xue Ding Fei was also his son. For the sake of the Xue family, he was willing to sacrifice his own son. Why couldn't the Empress Dowager do the same?

Xue Shu sneered at the Empress Dowager, then walked out. Xue Yuan had replaced the guards in the palace. Xue Shu instructed the guards that when the emperor descended from the hall, they were to escort him directly to her chamber. Yan Lin and Xie Wei returned to the capital and, accompanied by Zhang Zhe, went to the palace to meet the emperor. Before entering the imperial palace, the guards asked them to surrender their weapons. At first, Yan Lin was reluctant to comply, but when he saw Xie Wei nodding to him, he reluctantly handed over his sword.

After they left, the soldier guarding the gate immediately sent a message to Xue Ye. According to the prearranged plan, when Xie Wei, Yan Lin, and the others reached the ramp leading to the palace, Xue Ye suddenly appeared with his men and blocked their way. Seeing that they were outnumbered, Yan Lin fought fiercely against Xue Ye's men to buy time for Sword Book to protect Xie Wei and Zhang Zhe to escape.

While Xie Wei and the others entered the palace, Dao Qin accompanied Lv Xian and Jiang Xue Ning to Duke Dingguo's residence. Zhou Yinzhi held the prepared charges and forced You Fang Yin to sign them. However, You Fang Yin suddenly tore up the charges. Just as Zhou Yinzhi was about to torture her again, Jiang Xue Ning and the others suddenly arrived. Zhou Yinzhi had witnessed Dao Qin's martial arts skills before, so in order to save himself, he held a knife to You Fang Yin's neck.