Tusi, also known as local officials and Tusi, was an official post in the ancient frontier of China, which was first established in the Yuan Dynasty.

It was used to confer the titles of tribal leaders of ethnic minorities in northwest and southwest China.

Toast is divided into broad sense and narrow sense. In a broad sense, chieftain refers not only to the administrative office independently established by the indigenous people in minority areas within their sphere of influence and permitted by national laws, but also to local officials who "have their place in the world, govern their people, unify their soldiers in the world, perform their duties hereditary, govern their position in the world, and enter the world and be sealed by them".

In a narrow sense, Tusi refers to the local officials who "occupy a place in the world, control their people, control their soldiers, take their duties hereditary, control their positions, join their ranks and be sealed by them".

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Other toast:

Burmese toast:

Myanmar is connected with mountains and rivers in the west of Yunnan Province. During the nearly 600 years from the middle of13rd century to the middle of19th century, great changes have taken place in the territory of China and Myanmar. There were several wars between the feudal dynasties of the two countries, which brought disasters to the two peoples, but the continuous friendly exchanges were the mainstream, and the traditional friendship between the two peoples continued to develop.

/kloc-In the middle of 0/3rd century, Myanmar was ruled by Bagan dynasty. The capital is Bagan City in central Myanmar today, and its territory has not yet reached the upper reaches of the Irrawaddy River and the upper reaches of salween where Kachin and Shan ethnic groups live.

China at this time coincided with Kublai Khan's establishment of a unified feudal empire, the Yuan Dynasty. The territory of Yunnan Province in Yuan Dynasty basically followed the "Dali" era. Some roads and houses have been set up in the upper reaches of Irrawaddy River and salween, which are under the jurisdiction of local officials. King Bagan and the Emperor of Yuan Dynasty had their own plans, and the contradiction became increasingly fierce.

127 1 year and 1273, Kublai Khan sent envoys to Myanmar twice, and King Naroti Kubo of Bagan detained the envoys of the Yuan Dynasty for the second time, which intensified the conflict between Yuan and Myanmar. 1277, King Bagan opposed Ah He, the general manager of Jinya (now Dehong), to obey the rule of the Yuan Dynasty and launched an attack. The Burmese army assembled "40,000 troops, 800 elephants and 10,000 horses", attacked Ganya (now Yingjiang) and Nandian (now Lianghe), and fought fiercely with Jinya soldiers and Yuan defenders.

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