The Tang Dynasty of China when faced with rebellion from General An Lushan in their northern territories sought outside support from mercenary forces. This was done a number of times during the rebellion, these mercenaries were typically Arab, however, we also have examples of soldiers brought from Uighur to fight with the Tang and numbered in the thousands in the fight against Lushan's forces.
With the help of mercenary forces, the Tang were able to take back several important capital cities of China and effectively eliminated the rebellion of Lushan, as well as his later supporters and successors.
They were routes which allowed pioneers to move to the west in the 19th century
Three periods, the Old, Middle, and New Kingdoms, with an intermediate period between the Old and Middle Kingdoms and a second intermediate period between the Middle and New Kingdoms.
