Open the map, find 39 degrees and 54 minutes, and then draw a straight line along this latitude. It can be found that Chang 'an Avenue, known as "the first street in the world", is on this straight line, and so is the peak called Wangdu Peak (or Dingdu Peak). After the completion of the west extension project of Chang 'an Street, if you climb Wang Dufeng and look east, you will feel as if you are on Chang 'an Street. As you can imagine, the legends about Ding Dufeng and Wang Dufeng seem to have some truth. In the sunny weather without air pollution hundreds of years ago, maybe you can really see Niuxin Mountain standing on Chang 'an Avenue!