A documentary depicting exchanges between China's Mogao grottoes and Cambodia's Angkor Wat was released on August 31st,2019. (Photo: chinadaily.com.cn)

Tourists visit one of the Mogao Caves' 492 Buddhist grottoes in Dunhuang, Gansu province. (Photo: China Daily)

Now, Angkor Wat is a popular destination for Chinese tourists. (Photo: IC)

Cambodia's Angkor Wat was listed as a World Heritage site in 1992 and China began the restoration in 2000. (Photo: CGTN)