After returning to the capital, the eldest daughter saved her entire clan with her medical skills.

As soon as Murong Xun entered the Regent's Palace, the steward rushed forward. "Your Highness, news has arrived from the palace. The Emperor is unwell and summons you to the palace immediately." Murong Xun frowned. Why did the Emperor have to fall ill now of all times? There must be something fishy going on. But he couldn't disobey the imperial decree, so he suppressed his suspicions and said in a deep voice, "Prepare the horses. I will go to the palace immediately."

Arriving at the palace at top speed, Murong Xun went straight to the Emperor's bedchamber. There he found the Emperor lying pale on his bed, surrounded by a group of imperial physicians, all looking worried. Upon seeing him, the Emperor weakly raised his hand and said, "Uncle, I suddenly feel unwell, and all the imperial physicians are at a loss. I beg you, Uncle, to save me."

Murong Xun stepped forward to take the Emperor's pulse, his brows furrowing deeper and deeper. The pulse was strange, unlike that of an ordinary illness, more like the pulse of a very subtle, slow-acting poison. He already had some guesses in his mind, but he didn't say anything, only saying, "Your Majesty, please don't worry, this humble subject will do his utmost." Then he began to think of ways to detoxify, his mind quickly flashing through various medical books, searching for a solution. He thought to himself, the Emperor has always been healthy, how could he suddenly fall ill? He didn't have time to think further, quickly changed into his court robes, and hurried to the palace on horseback.

Entering the Imperial Study, Murong Xun saw the Emperor leaning against the dragon throne, his face pale and his forehead covered in sweat. The imperial physicians beside him all looked worried, shaking their heads and sighing. Murong Xun hurriedly stepped forward, kneeling and bowing: "Your Majesty, I pay my respects and wish Your Majesty a speedy recovery." The Emperor weakly waved his hand: "Rise, my dear minister. Recently, I have been feeling weak all over, with a splitting headache, and the imperial physicians are all helpless." Murong Xun glanced at the physicians, already having a guess in his mind. He stood up and said, "Your Majesty, I have some medical knowledge. May I examine Your Majesty?" A glimmer of hope flashed in the Emperor's eyes, and he nodded in agreement. Murong Xun stepped forward, carefully taking the Emperor's pulse, and observing his complexion and tongue coating. After a moment, he had a conclusion. It turned out that the Emperor had been poisoned with a very subtle, slow-acting poison. Although the toxicity was not fatal, it would gradually erode the Emperor's body. Murong Xun pondered for a moment and said, "Your Majesty, do not worry, I have a way to cure the poison." He then began to prepare the antidote. The Emperor, pale-faced, leaned against the dragon throne, the imperial physicians around him all looking worried. Murong Xun bowed and stepped forward to examine the Emperor's condition. He felt the Emperor's pulse and carefully observed his complexion, gaining a general understanding. He dismissed the others, took a silver needle from his sleeve, and swiftly inserted it into the Emperor's acupoints. The Emperor's face gradually regained color, and he slowly opened his eyes. The Emperor weakly said, "Thanks to the Regent's acupuncture, I feel much better." Murong Xun said, "Your Majesty's health is paramount. Although your condition has been temporarily stabilized, this chronic poison is extremely difficult to treat and requires long-term treatment." Murong Xun continued, "Your Majesty, this poison is quite insidious; we still need to further investigate the poisoner. At the same time, I will prescribe several treatment formulas; if Your Majesty takes them on time, you will surely recover gradually." The Emperor nodded slightly. "Uncle, you've gone to great lengths. You must find the poisoner."

Just then, a commotion arose outside the palace. A young eunuch rushed in, "Your Majesty, the Empress, hearing of your illness, has come to visit you with tonics." Murong Xun's heart skipped a beat; the Empress's visit at this time was surely not simple. A moment later, the Empress gracefully entered, first greeting the Emperor with concern, but her gaze inadvertently swept over Murong Xun. Murong Xun became secretly vigilant. He suspected the Empress was involved in the poisoning. He decided to discreetly investigate the palace to find the culprit and protect the Emperor's safety. "You still need to recuperate properly," the Emperor said. He then wrote a prescription and instructed the Emperor to take it on time. The Emperor greatly praised Murong Xun's medical skills and rewarded him handsomely. Murong Xun thanked the Emperor and left the palace.