Sultan Said Khan (Chagatai and Persian: سلطان سعید خان) ruled the Yarkent Khanate from September 1514 to July 1533.
Dughlat emirs had ruled the country that lay south of Tangri-Tagh in the Tarim Basin from the middle of the thirteenth century, on behalf of Chagatai Khan and his descendants, as their satellites.
Using this forced labour system he collected during his reign very large amount of treasuries and became the owner of very rare and valuable things, some of them hundreds and thousands years old.
They almost reached him in Karangu Tagh Mountains, but Mirza Abu Bakr managed to escape by killing all 900 donkeys and dumping all treasuries into Karakash River.
So, he found it's impossible to stay in Ladakh, he decided to turn back and surrender to Sultan Said Khan but on half-way to Yarkand was captured and slaughtered by Dughlat emirs, who betrayed him.
As a result, the eastern part of the settled country south and partly north of Tangri-Tagh joined his state, including the cities of Bai, Kucha, Chalish (Karashahr), Urum (Urumchi), Turpan, Kumul, and Shazhou (Dunhuang), representing those lands of former Uyghuria (856–1335) that were known as the Fifth Ulus of the Mongol Empire in the middle of the thirteenth century, because the former ruler of Uyghuria, idikut Baurchuk Art Tekin married Altun Begi, the daughter of Genghis Khan, and was declared by Genghis as his fifth son in 1211.
[2] Relations between Yarkand Khanate and Ming dynasty China were not developed, although the far eastern boundaries of Yarkand reached the Jiayuguan Pass at the western end of the Great Wall of China due to holy expeditions of Mansur Khan, including expeditions against the Sarigh Uyghurs – Yellow Uyghurs or Uyghurs of yellow religion, called Yugurs, who worshipped Tibetan Buddhism and took refuge in Gansu province of Ming China in 1529, fleeing the holy warriors of Mansur Khan.
[citation needed] Before his death during almost 20 years of ruling he united all the settled country south of Tangri Tagh, from Kashgar to Kumul, into one centralized state- Yarkand Khanate with a population of the same origin and language.
Also such mountainous regions as Kashmir and Bolor became dependencies of Yarkand Khanate, paid tributes and struck silver and golder coins under name "Abul Fath Sultan Said Khan Ghazi".
Foreign traders, upon arrival to any town, could leave their luggage dumped directly on the road and, after taking a rest for several days and returning, they could find their goods in the same place – safe and untouched.
[citation needed] Said Khan had a close relationship with Babur, his cousin and founder of the Mughal Empire across the Himalayas and Karakoram Range from the Yashkent Khanate.
The siege of the Zafar fortress lasted 3 months during which Babur assembled State Council in Agra and it was decided on it to avoid a war between Moghul Empire and Yarkent Khanate, Hindal Mirza was recalled to Agra and Suleiman Shah, son of the former ruler of Badakhshan Mirza Wais Khan, who died in 1520 and was a son of Timurid Sultan Mahmud Mirza and Sultan Nigar Khanum, daughter of Yunus Khan and Shah Begum, was restored as a lawful ruler of Badakhshan.
In Baltistan, the Sultan encountered a population of friendly Muslims, but he turned them killing and enslaving them, possibly because they were Shiites which was heretic to orthodox Yarkandi Sunnis.
In the spring, the two parties met up again in Maryul, the Sultan decided to return to Yarkand, but he instructed Haider to conquer Tibet for Islam before his departure.
It was eliminated during the fifteenth and sixteenth centuries by nomadic tribes of Kyrgyz, Kazakhs and Jungars, that captured all the Moghul lands north of Tangri Tagh.
The Khojas were divided into two hostile groups that hated and killed each other – the Ak Taghliks (White Mountaineers) and the Kara Taghliks (Black Mountaineers), who deposed one of the last Moghul Khans, Ismail Khan, in 1678, with the help of invited Kalmyks (Dzungars), and put the whole country under the feet of future invaders, including Dzungar Khanate and Qing dynasty of China, for gaining personal powers.