Pingyao is one of China's three protected ancient cities (the other two are Xi'an and Jingzhou). Lying in the middle of Shanxi Province, 90 kilometers south of Taiyuan, Pingyao ancient city used to be about two hours' drive from the capital of Shanxi Province, but now the distance is only one hour and ten minutes' drive after the highway was built. With a history of over 2,700 years, the ancient city stands out as one of the best protected of all the walled cities in China. On December 3rd, 1997, UNESCO   added Pingyao to the World Heritage   List as a world's culture heritage. According to the UNESCO World Heritage Commission ,the Pingyao ancient city is a wonderful example of the Chinese Han cities during the Ming and Qing dynasties. All the features of the Pingyao ancient city have been protected, and it shows an outstanding Chinese historical development including its culture, society, economy and religion . ,A, B, C, D,. (10) If you go there some day, you shouldn't   _   .
carve your name on the wall draw a picture on the wall litter everywhere destroy the city