Immortality: I Grow with My Spiritual Roots

The protagonist has a spiritual root that grows as long as it absorbs spiritual energy, just like watering a sapling. As the "sapling" grows, the quality of the spiritual root will become stronger. The four basic attribute points: "strength, mana, true energy, and cave." "Dongtian" is mainly used to make room for the growth of spiritual roots. The protagonist has a cave in the sky, and his spiritual roots grow from a small sapling to a towering tree. There are treasures above and below the tree. It has a cultivation system in which martial arts and immortality coexist, with martial arts in the early stage, immortality in the middle stage, and dual cultivation of immortality and martial arts in the later stage... Immortal cultivation realm: Qi refining - Foundation building - Golden elixir - Yuanying - Transformation of gods - Dongxu - Hedao - Mahayana - True Immortal - Golden Immortal - Taiyi Golden Immortal - Daluo Golden Immortal - Heavenly Dao Saint - Dao Saint Martial arts cultivation realm: Gathering Qi Realm (Human Level - Earth Level - Heavenly Level) - Huihai Realm (Cangzhu Level - Cangliu Level - Canglang Level - Cangming Level) - Rongyuan Realm (with 40 trillion to 60 trillion small realms) - Liyuan Realm - Fengyuan Realm - True Yuan Realm