This photo taken on March 16, 2023 shows the ruins of Suoyang City in Guazhou County, northwest China's Gansu Province. The site of Suoyang City was one of the locations along the Routes Network of Chang'an-Tianshan Corridor of the Silk Road, which was inscribed on the UNESCO World Heritage List in 2014. (Xinhua/Chen Bin)

This photo taken on March 16, 2023 shows the Ta'er ancient temple site at the ruins of Suoyang City in Guazhou County, northwest China's Gansu Province. The site of Suoyang City was one of the locations along the Routes Network of Chang'an-Tianshan Corridor of the Silk Road, which was inscribed on the UNESCO World Heritage List in 2014. (Xinhua/Chen Bin)

Tourists visit the ruins of Suoyang City in Guazhou County, northwest China's Gansu Province, on March 16, 2023. The site of Suoyang City was one of the locations along the Routes Network of Chang'an-Tianshan Corridor of the Silk Road, which was inscribed on the UNESCO World Heritage List in 2014. (Xinhua/Chen Bin)

This photo taken on March 16, 2023 shows the southwest barbican site of inner city at the ruins of Suoyang City in Guazhou County, northwest China's Gansu Province. The site of Suoyang City was one of the locations along the Routes Network of Chang'an-Tianshan Corridor of the Silk Road, which was inscribed on the UNESCO World Heritage List in 2014. (Xinhua/Chen Bin)

This photo taken on March 16, 2023 shows the Ta'er ancient temple site at the ruins of Suoyang City in Guazhou County, northwest China's Gansu Province. The site of Suoyang City was one of the locations along the Routes Network of Chang'an-Tianshan Corridor of the Silk Road, which was inscribed on the UNESCO World Heritage List in 2014. (Xinhua/Chen Bin)

This photo taken on March 16, 2023 shows the ruins of Suoyang City in Guazhou County, northwest China's Gansu Province. The site of Suoyang City was one of the locations along the Routes Network of Chang'an-Tianshan Corridor of the Silk Road, which was inscribed on the UNESCO World Heritage List in 2014. (Xinhua/Chen Bin)