Plants, soil, water sources.
After collecting several important pieces of data, they prepared to return the way they had come.
It would be at least six months before they could return, perhaps not until next April when the ice and snow had melted.
They made a special mark on this spot, and next time, they might try to set up a permanent hut here as a base.
The environment, climate, and surrounding plant and animal resources were quite abundant; if they really wanted to implement policies such as "returning tigers to the mountains" and "northward migration of bears," this spot would definitely need a permanent human presence.
This time, they were scouting and only needed to bring the data back; as for whether or how the plan would be executed, it was no longer their concern.
The sampling admission system, implemented internally last year, was soon to be implemented nationwide.