Kublai Khan proclaimed himself emperor and promulgated the decree of the "Founding Edict", taking the meaning of Dazai Ganyuan in the "Book of Changes", and officially establishing the country as Dayuan. A year later, under Liu Bingzhong's planning, the Yuan Empire was established as the capital of the Jin Central Plains.

After the political situation in the north stabilized, Kublai Khan decided to adopt the suggestion of Liu Quan, a general of the Southern Song Dynasty, to first pull out Xiangyang, float the Han River into the Yangtze River, and enter the Southern Song Dynasty. Kublai Khan ordered Ashu and Liu Quan to oversee the division, besiege the towns of Xiang and Fan across the Han River, and the soldiers and civilians of Xiangfan refused to defend the lonely city for six years, the Yuan army captured Fancheng, and the commander of Xiangyang, Lu Wenhuan, surrendered.

In June of the following year, Kublai Khan ordered Boyan to supervise the army and march south by two routes. The left army was composed of Heda Jiedu, with Liu Quan as the vanguard, and Huaixi was dispatched. Boyan himself and Ah Shu led the main force of the right army, set out from Xiangyang in September and entered the Yangtze River along the Han River; at the same time ordered Dong Wenbing to force Anqing from Zhengyang in Huaixi to the south, thinking that it would echo.

In December, the Yuan army's naval division entered the Yangtze River and conquered Yangluobao, the fortress of the Song River, and Xia Gui, the commander of the Song-Han and Ezhou Zhou Divisions, fled, and the Song army defending Hanyang and Ezhou surrendered. Boyan divided his troops to stay in Ali Hague and pass through Jinghu, and led his land and water army to the east, with Lu Wenhuan as the vanguard. Most of the commanders along the river in the Song Dynasty were Lu Wenhuan's old troops, and they all surrendered without a fight.

Jia Rudao was forced to supervise the elite soldiers of Zhulu to resist the Yuan army, at this time he still tried to pay the money to the ministers to negotiate peace, but was rejected by Boyan, so he had to reluctantly fight the Yuan army in Dingjiazhou, downstream of Chizhou. Because of the discord within the Song army, the battle with the Yuan army was about to collapse, and Boyan divided his troops from the first line of Jiankang and Zhenjiang to Lin'an, the capital of the Song Dynasty, and the young emperor of the Song Dynasty, Zhao Yu, surrendered to the Yuan army.

After that, the Southern Song Dynasty minister Wen Tianxiang, Zhang Shijie, Lu Xiufu and others continued to resist stubbornly on the southeast coast, supporting Zhao Yu, the king of Yi, as the emperor, and after Zhao Yu's death, he supported Zhao Yu, the king of Wei, and continued the war of resistance. Wen Tianxiang was defeated and captured, and was imprisoned in Dadu for three years, refusing the Yuan Dynasty's recruitment, and then calmly surrendered. Zhang Hongfan, the general of the Jin State, commanded the Yuan army to eliminate the last resistance of the Southern Song Dynasty at Yashan, and Lu Xiufu carried the eight-year-old young emperor Zhao Yu to the sea and was martyred, and the Southern Song Dynasty perished.

Mongolians are a people on horseback, three meals a day in addition to milk, the most inseparable is mutton, the most famous food is often related to mutton, roast lamb leg, roast lamb chops. And now the mutton shabu that must be ordered when eating hot pot is said to have been invented by Kublai Khan, the Mongolian Khan and the emperor of the Yuan Dynasty.

Legend Kublai Khan once led a large army to the south expedition, on the way to the march, people are sleepy and lack of horses like resting and want to eat, Kublai Khan felt that the food in the army was too poor, suddenly remembered the delicious food in his hometown, thought of the stewed mutton and couldn't help drooling, so he ordered to go down, the cook immediately slaughtered the lamb, burned the fire to prepare the stew.

But suddenly the spies came to report that the enemy was approaching, but Kublai Khan was already hungry, so he ordered his troops to prepare for battle, and at the same time continued to urge the cooks to hurry up and cook, just to eat stewed mutton. The cook knew that he was impatient and did not dare to provoke him, but it took a long time for the mutton to be stewed, and if it was so slow, the enemy would have come long ago, and by the time the mutton was stewed, he would have been beheaded several times. At this time, the cook was in a hurry, cut the mutton from the pieces into thin slices, then put it in the pot and soaked it a few times, then fished it out, sprinkled some seasoning, and served it to Kublai Khan.

After Kublai Khan finished eating, he went to kill the enemy, and soon returned triumphantly, Kublai Khan was very happy, and felt that the cook had merit, so he asked him to make the dish again, and then let his generals taste it together. Everyone was full of praise for it, so Kublai Khan named it shabu mutton, which later became a delicacy in the court.

Shabu mutton, also known as mutton hot pot, is generally believed to have started in the Yuan Dynasty and arose in the Qing Dynasty, and the Qing Dynasty emperors held several large-scale banquets basically had the dish of shabu mutton. There are three basic requirements for shabu mutton, the selection of materials should be fresh and tender, the slices should be paper-thin and even, and the seasoning should be delicious and delicious.

Kublai Khan had many wives and therefore many children, and it is recorded that he had as many as ten sons, whose names were Duo'er, Zhenjin, Busy Brother, Namhan, Kugechi, Aiyachi, Oduchi, Kuokuochu, Tuhuan, and Kudulu Timur.

The eldest son Duo'er only died early, so there is little historical data, and the second son Zhenjin was born to Kublai Khan and Empress Chabi, and he is the eldest son. He was asked by his father to study Han Confucianism from an early age, and was named King of Yan in the second year of Kublai Khan's succession. Later, because Kublai Khan changed the tradition of electing the Great Khan in the Mongol Assembly to the Han Han primogeniture, Zhenjin was named the crown prince. After that, he went to Tibet for several years to take charge of foreign affairs and study Buddhism, and after returning to Beijing, he participated in the imperial government, supported Han culture, and fought against hostile forces.

A note that made Kublai Khan Zen throne caused an uproar in the imperial court at that time, Kublai Khan was furious, and Zhenjin was the most suspicious as the crown prince, so he was frightened, and later fell ill and died, only forty-three years old, nicknamed Prince Mingxiao. However, his third son, Timur, succeeded him as crown prince and later became the second emperor of the Yuan dynasty. Therefore, Zhenjin was also respected as the emperor by his son, the temple name Yuzong, and the nickname Wenhui Mingxiao Emperor.

Most of the sons after Kublai Khan were crowned kings by him and were responsible for guarding various places. The fourth son, Namuhan, who is the half-brother of Zhenjin, was canonized as the king of Beiping, guarded the north, once crusaded against the rebellious Chagatai Khanate, and later became the king of Bei'an, leaving no heirs, and was posthumously named the king of Guiding a few years later.

Kublai Khan was the last Great Khan of the Mongol Empire and the founding emperor of the Yuan Dynasty.

Kublai Khan was a Mongol on horseback, whether it was his grandfather Genghis Khan or his father Torre, both of whom were good at leading troops into war and were excellent military strategists. Kublai Khan was not much different from these two, he attacked the Dali Kingdom in Yunnan and finally caused it to surrender and destroy the country, attacked the Southern Song Dynasty and forced them to send the prime minister to cede land and sue for peace, after succeeding to the throne, destroyed the Southern Song Dynasty and unified China, and attacked Japan twice, although both ended in failure.

Kublai Khan conquered many countries and regions, and his army must have brought many disasters to these places. In particular, his grandfather and father had the terrible experience of slaughtering the city, and even if he did not massacre many people, Kublai Khan must have done similar cruel things, so his military talent is worthy of recognition, but there are also many faults.

Kublai Khan respected Confucianism from an early age, and in his early administration of the region, he appointed a large number of Han Confucian scholars as his staff. After he succeeded to the throne and established the Yuan Dynasty, Kublai Khan reused Han Chen and adopted Han law, which well alleviated the national contradictions between Han and Mongolia and consolidated his rule. In addition, as a nomadic people, he attached great importance to the restoration and development of agriculture, implemented the national grain control policy, purchased surplus grain in good years, and distributed it free of charge in bad years. The paper money used today is also said to have been invented by Kublai Khan, who introduced banknotes into circulation.

Later generations praised Kublai Khan for his bravery and martial arts, and Marco Polo said that he was a powerful monarch that had never been seen before.

The three Great Khans of Mongolia, Ögedei, Möngke and Kublai Khan all launched wars against the Southern Song Dynasty, and finally the Southern Song Dynasty perished in the hands of Kublai Khan, and the Song-Mongolian War lasted for forty-five years, so it can be said that the Southern Song Dynasty was the longest and most difficult country for the Mongol Empire to attack.

During his reign, the Mongols began their first war against the Southern Song Dynasty, but six years later ended in the defeat of the Mongols, and the Mongol Empire's first defeat in the conquest of other countries. Later, Meng Ge succeeded to the throne, and the troops attacked the Southern Song Dynasty in three ways, among which he personally led the middle army to crusade against Sichuan and broke the CD, but he could not attack Hezhou for a long time, and he suddenly died of illness there. Kublai Khan's attack on Ezhou also made no progress, and although the Southern Song Dynasty Prime Minister Jia Yidao sent people to cede land and ask for peace, the Second World War was another failure.

Kublai Khan became the Great Khan and later quelled civil strife, established the Yuan Dynasty, and launched the Yuan War to destroy the Song Dynasty. The first attack of the Yuan army this time was Xiangyang, and it took six years to capture the city. After that, the Yuan army went all the way down the Yangtze River to capture Lin'an, and the Southern Song Emperor surrendered, but the remnants of the Southern Song Dynasty set up another emperor and continued to resist in Fujian, Guangdong and other places. The final decisive battle between the Yuan Dynasty and the Southern Song Dynasty broke out at Yashan in Guangdong, and the Southern Song Dynasty was defeated and completely destroyed, and the Yuan Dynasty unified China.

Kublai Khan's ability to destroy the Southern Song Dynasty was determined by a correct strategy from a military point of view, in addition to the strong military strength of the Yuan Dynasty and the corruption of the Southern Song court. Kublai Khan saw the capture of Xiangyang as the key to the destruction of the Southern Song Dynasty, which was different from before. And this strategy was not proposed and designed by the Yuan Dynasty itself, but by Liu Quanjin, a surrendered general of the Southern Song Dynasty.

Phags-pa is a high-ranking monk in Tibet, whose real name is Luogu Luosi Prison, and Phags-pa is his honorific title, which means the Holy One. After Kublai Khan succeeded to the throne of the Great Khan of the Mongol Empire, he canonized Phags-pa as his national teacher.

From an early age, Phags-pa studied religion and politics with his elders, and later became the fifth patriarch of the Sakya sect. Phags-pa met with Kublai Khan, who had not yet ascended the throne, and Kublai Khan's family revered him as a guru, received tantric empowerments in front of him, and offered treasures as offerings.

This meeting laid the foundation for the future intimacy between the two of them. At that time, Buddhism and Taoism had been fighting each other in the Mongol Empire, and there were often heated debates between the two sides for power and believers.

Kublai Khan became the Great Khan of the Mongols, and Pasipa was revered by him as a national teacher, and four years later he also served as the head of the imperial court, and slowly participated in the government politics. Soon after, at the behest of Kublai Khan, Phags-pa created a new Mongolian script, also known as Phag-Pa script, which was ordered by Kublai Khan to be implemented throughout the country and became the official script of the Yuan Dynasty. Later, the highly regarded Phags-pa gave Kublai Khan a second empowerment and was promoted to the position of Emperor and Great Treasure.

Pasipa was the first national teacher and the first emperor of the Yuan Dynasty, and his achievements during his lifetime were extremely great. First of all, Buddhism has made great progress in the Yuan Dynasty, and after his death, the Yuan Dynasty still appointed monks as national teachers; on the other hand, he also promoted cultural exchanges among the people of all ethnic groups in the country, and was a hero of ethnic integration. In addition, by managing Tibetan affairs, he also made Tibet develop.