The first day of National Day: Where is this? Why is it all snowy in autumn?

⭐Location: National Scenic Avenue No. 1 (The highest altitude place, there is a big head on the Yuke Highway: I didn’t pay attention to the name at the entrance of the scenic spot, and the map didn’t show it) Free: parking is free, scenic spots are free (currently) On the day of the National Day, we set off from Beijing to Ulan Butong and took a look at the route: Jingjia Road → National Highway 111 → Yuguan Line → National Scenic Avenue No. 1 (Yuke Line) → Ulan Butong. I was stuck in a traffic jam in Kyoto for a while in the morning, and everything was perfect afterwards. When we were on the National Scenic Avenue No. 1, we sighed at the beautiful colors on the roadside. It was already afternoon, so we had to hurry up and didn't make too many stops. When we reached a high altitude, we saw a snowy scene in front of us. On both sides of the road were tall and straight pitch pine trees. We looked at the trees trampling on the snow and then continued on. Unexpectedly, we didn’t drive very far and found a scenic spot with not many people: so beautiful. I parked the car (free) and prepared to buy tickets. I found that there was no one at the ticket sales place. Everyone walked in directly (I don’t know if it was not built yet or it was closed due to the cold weather). There was a wooden plank road inside, and the snow had been trampled hard. . Walking along the road, the hillside on the left is covered with snowy clouds, and the right is like a cow walking on the horizon. The boardwalk was very long and the weather was very cold. Although I was wearing a thick down jacket, the wind was too strong and I went back. Because I was attracted by the beautiful scenery, I didn’t have time to look for the name of the scenic spot. When I looked at the map that night, I didn’t see the name (if anyone knows the name of this place, please let me know, thank you) NOTE⚠️: 1. Bring thick clothes (at least three in one) 2. Bring winter toiletries (windy and cold) 3. There are many cars and people, so pay attention to safety