Immortal Ancestor of Resurrection of Spiritual Energy

No system + single female protagonist + no harem + establishing a sect in modern society + accepting apprentices + slow-burning style + reasonable logic + no routines. The story is grand and requires patience to read. The spirit revives, I am the source of everything, Everything started because of me, Everything changes because of me, modern city, There is no foundation-building pill, there are no heavenly materials or earthly treasures, and there is no foundation-building pill recipe. So, how can I break through? Can we only stop at the qi training period in this life? I am not willing to give in!