If I remember correctly, this sentence comes from Laozi's Tao Te Ching, which takes Tao as the total root of all things in the universe and thinks that everything originates from Tao. Tao gives birth to one, two, three and everything. In other words, everything in the world did not exist at first, but came from scratch. Based on some contingency (the way of Laozi), it first existed, then slowly multiplied, and then there were countless things. for reference only