How does the Korean drama Doctor Xu Jun end?

Heo Yun was born in the royal family, but because his mother was an untouchable, he also became an untouchable, bearing all kinds of unequal shame. Depression made him degenerate and even involved in smuggling transactions. At this time, he met a big official, a good family, Li Daxi. I am glad that my father is a sinner. My father died during his escape. Based on his pity for the people who were degraded to the end of the world, Xu Yun buried his father for his joy. Thanks to the rescue of his indifferent father, Heo Jun's smuggling trade became popular. His father left his hometown with him, his mother and Dorothy. In Yinshan Qingshangdao, Xu Jun married the duo Xi. Live a secluded life after marriage. Xu Yun later met Liu Yitai, a famous local doctor. Because his mother was ill, he decided to take refuge in Liu Yitai to study medicine. His talent began to play, remembering medicinal materials, and the curative effect was better than others. Rui Zhen, an orphan girl who lives in the Liu family, appreciates him very much and teaches him herbs. By chance, Mr. Liu Yitai cured Mrs. You Xiang on behalf of the teacher. The narrow escape was finally cured, and was appreciated by Mrs. Right Xiang and recommended to enter the inner court. However, Liu Yitai was expelled from his old school. On the way, he was taught by Jin and An Guangyi. Xu Jun decided to take the exam in Hanyang, but he couldn't take the exam because he had to treat patients with acute illness. But he was so famous that Liu Yitai accepted him as an apprentice. After Liu Yitai became seriously ill, he decided to commit suicide. In order to fulfill Xu Yun's wish to study medicine, Xu Yun finally entered the hospital with the first place in the imperial examination. In Hanyang Neijing Hospital, Xu Yun met the physician Yang Lishou. More than 20 years ago, Yang Lishou and Liu Yitai had an acupuncture war, but Liu Yitai defeated them. Yang Lishou was still obsessed with the shame of the past, so he sent Xu Jun, who had made outstanding contributions, to Huimin Department. In Huimin Department, Xu Yun lived a hard life under the bondage of Yang Lishou. The younger brother of Prince Gong, the queen in the palace, has nausea (stomach cancer), and many doctors are helpless. Young Xu Yun was invited to have a medical war with his senior Yang Lishou. He stopped his illness in just five days with his unique and exquisite medical skills. From then on, Yang Lishou paid special respect to him, and said that he finally candidly admit defeat to Liu Yitai's medical skills. In the twenty-second year of Xuanzu of Korea, infectious diseases broke out all over the country, and Hejun actively studied the symptoms and prescriptions. Then there was the "Rebellion of the Enemy" (known as the war between China, China and South Korea in Japanese history books). North Korean ministers and doctors fled with Xuanzu, while Hsun Yun insisted on fleeing with Shen Zhong's medical books and sick books. After the war, Heo Jun rearranged the medical equipment and books in the inner courtyard. Xuanzu made an exception and named him doctor Jing Lu because of his meritorious escort when he fled. 1596, Xu Yun proposed to Xuanzu to compile medical books, popularize medical skills, let ordinary people know how to read, and prevent problems before they happen. A political struggle broke out in support of King Yongchang and Guang Hai Jun, the illegitimate son of Prince Edward, but Xu Jun refused to participate, insisting that doctors only treat diseases without asking about political affairs. Until Xuanzu died in 1608 and Guang Hai Jun succeeded to the throne, Xu Jun was finally exiled to the south in 1609. The medical officer of the inner court secretly transported the medical books to the exile, allowing Xu Yun to continue his compilation work. Finally, in 16 10, Heo Jun wrote a collection of famous Korean traditional medicine books he had learned all his life, and published them in 16 13. This book, together with Compendium of Materia Medica by Li Shizhen in Ming Dynasty in China, is listed as a classic of Chinese medicine. After two years in exile, in 16 1 1 year, Guang Navy pardoned Xu Yun's crime and called him back to the palace. However, despite the invitation of Guang Navy, Heo Yun insisted on going back to Yin Shan to take care of the poor patients in his hometown. At this time, there was a national plague in North Korea, and doctors could do nothing. Xu Yun was summoned to the palace. With the help of other medical officers, he finally succeeded in developing an anti-disease prescription. But due to fatigue, he didn't notice that he was infected with the epidemic. Finally, in 16 15, he died silently beside the patients in the medical center. The news of his death came out and the whole country mourned. ........