This is a situation that is often encountered when climbing mountains and taking ascending routes. In general, it is still possible to find a sloping flat ground on a slope (if you cannot find it, refer to the third and fourth paragraphs). The key is that when sleeping at night, the friction between the sleeping bag and the moisture-proof pad is small, and people will slide downward, making it impossible to fall asleep when the slope is large.
When building a tent for two people, choose to camp under the tent with two trees that are closer together. If you don't move two large stones underneath, place your backpack in the middle of the tree or stone. This way, when sleeping at night, you face up and step on the backpack at the bottom. In fact, this way, people fall asleep half standing. I camp on a hillside at around 30 degrees at a time, and after 4 hours, my feet feel very uncomfortable, and I sleep with my left and right feet alternately for a night.
If it is a good solution for one person, choose to camp with the side of the tent against a tree or stone, and place the backpack in the middle of the tree or stone. This way, the overall weight of the person is pressed against the backpack on the side. Sleeping on both sides alternately at night can ensure a better sleep effect.
