Under the tree, he found a big anthill, which was probably the "Kingdom of Dahuai'an" he had seen in his dream. There was a hole in the right of the tree's root, which was probably Nanke prefecture!
8. 他在槐樹下方找到一個大蟻洞，這大概就是睡夢中所見的「大槐安國」了，樹根右部有個樹洞，也許就是「南柯郡」吧！