The Great Wall (where I've been dreaming about) sets out at 7:30 in the morning at Jianguomen, takes the subway to Xizhimen, takes the S207 train to Beijing North Railway Station, enters the station directly after the security check of one card. No card has to buy tickets for 6 yuan. It's lucky to mention that there are still seats in five minutes. Most of the people go to the Great Wall. Nine carriages are fully occupied. They arrive at Badaling Station in one and a half hours. Passing Zhan Tianyou's tomb and the "man" shaped railway can also see the winding Great Wall on the hill from the window along the way. Because it was very cold on December 19, and the mountains were covered with snow from the previous days. If you want to climb the Great Wall on foot, you should go directly to the ticket office for climbing the Great Wall. Because you have to walk back 400 meters by the shuttle bus, many shops along the way sell tourist souvenirs. Pin Oh, there are military overcoats in, gloves. Off-season ticket price is 35, without insurance. There are two Shenwei cannons at the entrance. They enter Nancheng and Beicheng forks. Because there are many people in the north, we decided to climb Nancheng, several ninety-degree staircases, climb soft legs, climb to the fourth floor of the south, calculate the time. After consideration, we return to climb Beicheng and stop all the way to the eighth floor of the north. At the top of the open area, I think the best time to climb the Great Wall is 10,000 positive adjectives. I don't think the different scenery in different seasons is comparable. Unless the Great Wall is not a good man, I drank a bottle of Harbin beer prepared in advance in the city. It feels great. The fourth floor of the north is the end of the tunnel, with toilets and toilets. Food in the restaurant includes steamed buns, tea eggs, instant noodles,.From 2:40 to Badaling Station, swipe the card and enter the station. As a result, the train leaves at 3:53. So we have to check the time in advance, arrange reasonably, sit and wait for 20 minutes, stand and wait for more than 20 minutes, unexpectedly without heating, shivering with cold. Finally, we waited for another 10 minutes beside the outdoor train tracks, and finally we waited for S287, so we climbed the Great Wall to test people. Physical endurance, cold resistance, because in the front row, so there is a seat, a pleasant journey through the capital city, once through people zigzag railway. Back to the North Railway Station at 5:20, tired, hungry and cold.