Summon a System at the Start

(Newbie, new book, don't like to lightly comment) Ye You was originally a mortal, but because of a ring, he started a different life. The great road is fifty, Tianyan is forty-nine and escapes... The Tao can be Tao, but it is not Tao; the name can be named, but it is not named. Nameless, the beginning of heaven and earth, Named, the mother of all things. Therefore, always have no desire in order to observe its wonderfulness, and always have desire in order to observe its pleasure. These two have the same origin but different names. They are both called xuan.