When did dulcimer flow into China?

Dulcimer first appeared in Assyria and Persia in West Asia, and 1368- 1644 flowed into China. It has been more than 300 years since dulcimer appeared in China, and its shape has not changed obviously. Its main function is accompaniment. At the same time, there are various dulcimer music schools in China. For example, the music style of Guangdong dulcimer is gorgeous and lively, and its representative works include dulcimer solo "Thunder in a Dry Day" and "Ending". The music style of Sichuan dulcimer is rich and varied, full of passion. The musical style of Northeast dulcimer is calm and euphemistic. After the founding of New China, the dulcimer art developed at a faster speed, and the changes of the times promoted the reform of the traditional dulcimer. Musical instrument reformers reformed the traditional dulcimer, and initially created small-tone dulcimer and large-tone dulcimer, which laid the foundation for the formation of modern dulcimer in China. In addition, after the founding of New China, some specialized conservatories were established one after another, which promoted the sustainable development of dulcimer education to some extent. With the joint efforts of many outstanding folk dulcimer artists, the development space of dulcimer in the future has been effectively expanded. At this point, the dulcimer culture in China presents a brand-new development, and a group of performers with unique playing style and profound artistic accomplishment emerge, which inherits and develops the dulcimer culture in China. ?