This is the second time to go to the Great Wall. I went to Badaling for the first time a few years ago. Although I was still shocked by the magnificence of the Great Wall, there were too many tourists, and the wall was engraved with the names of three and four Li-si.................................... Why destroy precious historical sites, so the overall feeling is always somewhat regrettable. This trip to Mutianyu, there are a lot fewer tourists. We choose the ropeway to Tower No. 6, then go back to Tower No. 1, then go forward to Terminal No. 20. Between No. 19 and No. 20, almost vertical uphill is a very challenging period. After all, we have been walking for several hours, close to the physical limit, and our legs begin to tremble. The closer we get to the end point, the more difficult it is. ! When we reached platform 20, we found that there was still a section of wild Great Wall behind the wall. It was clear that the Great Wall was very tired. We still went over the wall and reached the real end of Mutianyu. If the physical strength is good, it is suggested to go to the wild Great Wall which has not been repaired and maintained, to truly feel the mottled historical relics, and to better appreciate the confrontational years in that space-time background. Down the hill, we chose a taxiway and took a pulley all the way down the hill from Tower 6. It was very interesting.