Build a Wasteland Shelter, from Saplings to World Trees

Many years later, Li Changming, who had become a 10,000-meter world tree, looked at the humans who lived and worked in peace and contentment in his body. He couldn't help but recall the apocalyptic era of the wasteland many years ago when nuclear radiation monsters were everywhere and humans were almost extinct. At that time, he was just a sapling in the wasteland that could be blown off by the wind at any time...