Desert Tree Planting System

There is a desert at the beginning, and the oasis depends entirely on planting. A part-time delivery boy picked up a green crystal-like ball on the side of the road on his way to get off work one day; But I didn't expect that this turned out to be a system. I never thought that there was such a thing as a system. From now on I have to go to the desert to plant trees This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.