A stone statue is pictured at the North Grotto Temple in Qingyang, northwest China's Gansu Province, Nov. 5, 2019. (Xinhua/Ma Ning)

QINGYANG, Nov. 6, 2019 (Xinhua) -- Located in northwest China's Gansu Province, the North Grotto Temple in Qingyang consists of 308 ancient Buddhist caves that date back to the early sixth century. Featuring more than 2,000 statues, the site is considered as a vault of art in Chinese Buddhism.

By carrying out routine inspections and making proper conservation plans, experts are trying to help the caves cope with natural damages such as wind erosion.

Aerial photo taken on Nov. 5, 2019 shows the North Grotto Temple in Qingyang, northwest China's Gansu Province. (Xinhua/Ma Ning)

Cultural relic conservation experts conduct moisture content tests inside Cave 267 of the North Grotto Temple in Qingyang, northwest China's Gansu Province, Nov. 5, 2019. (Xinhua/Ma Ning)

Cultural relic conservation experts conduct moisture content tests inside Cave 267 of the North Grotto Temple in Qingyang, northwest China's Gansu Province, Nov. 5, 2019. (Xinhua/Ma Ning)

A tourist walks past a stone statue at the North Grotto Temple in Qingyang, northwest China's Gansu Province, Nov. 5, 2019. (Xinhua/Ma Ning)■