计算3d下期跨度的方法

简介：Immortal Lord Li Xunxian said: I once raised a nine-colored divine sparrow. When it was just born, its fighting power was quite low. It couldn't even defeat lower-level mythical beasts! Later, when I reached the Golden Immortal level, I also had a knack for stealing things! But now in the thief business, it has always been leading and has never been surpassed.