Why is the new city named "Dayechang"?

It is said that in the Warring States Period a long time ago, this ancient city belonged to Shu County of Qin State, when it was still a swamp. During the Southern and Northern Dynasties, Naxi ancestors, one of the 56 ethnic groups in China, migrated here, and the ancient city began to prosper. However, the ancient city was really built in the late Song Dynasty and early Yuan Dynasty. At that time, a Naxi chief named Mu moved his ruling center from Baisha Town in the north of the ancient city to the foot of Lion Mountain and began to build houses and cities.

Because the founder of this ancient city is surnamed Mu, if a wall is built outside this ancient city, the word "Mu" will be falsely called "sleepy", which is very unlucky. Therefore, when building this ancient city, Mu Tusi deliberately did not build the city wall. Because the ancestor of this Mu Tusi belonged to the "Ye" branch of the four branches of Gunaxi people, after the completion of the ancient city, Mu Tusi named the new city "Dayechang", which was later Old Town of Lijiang, Yunnan.