33．Once a main stop on the ancient Silk Road，Dunhuang has wonderful Buddhist（佛教的）art dating back over 1，650 years.It is h（1）
to more than 2，000 colored sculptures and 45，000 square meters of murals（壁畫）.The sculptures and p（2）
in Mogao Grottoes show the cultures of ancient China，Central Asia and India.
The style and the content of the murals changed all the time throughout the（3）c
.In addition to their artistic values，the Dunhuang murals are today w（4）
considered as a treasure house with valuable information about religions，culture and social life in ancient China.The cultural e（5）
between China and the West brought progress and also helped Dunhuang culture prosper（繁榮）.
H（6）
，for a long time，the Mogao Grottoes were in danger.In 1944，the Dunhuang Academy was set up.It p（7）
and studies the grottoes and their culture.
Have you ever experienced "Digital Dunhuang"？People can see clear photos of the Mogao Grottoes online Videos，cartoons，and games can also help people learn more about the grottoes.Last year，Yunyou Dunhuang，a WeChat mini program，had 12 million visits within two months after it c（8）
out.
Dunhuang Museum opened i（9）
own online store in May 2020，attracting 50，000 customers in the following three months.It has used elements（元素）of Dunhuang culture to sell things（10）
stationery （文具） and makeup.To let the world learn more about Dunhuang，a national lab will be set up to research and protect the grottoes.A virtual reality tour system will go online around June.
