Why is there no high-speed train from Nanyang to Xi 'an?

Because the high-speed rail is under construction. According to official website of the State Railway Administration, as of March 2023 1 1, the Nanyang-Xi 'an high-speed railway is still under construction. This high-speed rail is the Ningxi high-speed rail. Ningxi high-speed railway is a high-speed railway from Nanjing to xi 'an. It passes through Nanjing, Hefei, Lu 'an, Xinyang, Nanyang, Shangluo and Xi 'an, with a total length of1100km and a design speed of 350km/h.