The yungui railway is an important railway channel connecting the southwest and south China, and also a "golden corridor" for the sea in the southwest region, with a total length of 710 kilometers, including 434 kilometers in yunnan province, with a designed driving speed of 250 kilometers per hour. It can reach kunming to nanning in about 4 hours and kunming to guangzhou in about 7 hours, greatly promoting the border ethnic regions and regional economic and social development.
