I Was an Immortal Emperor, But I Was Reborn as a Nobody and Must Reforge My Immortal Body

Urban Cultivation: Qi Refining, Foundation Establishment, Golden Core, Nascent Soul, Deity Transformation, Body Integration, Mahayana, Tribulation Transcendence

Is there a book where the protagonist is kidnapped and taken up a mountain from the start, spends years or even a decade cultivating in misery, then comes down already invincible?

Mortal Realm, Immortal Realm, Sacred Realm, Divine Realm, Chaos Realm, Hongmeng Realm, Eternal Realm

Earth, the Cultivation World, the Immortal Realm, and the Divine Realm

Earth, Immortal Realm, Divine Realm, Hongmeng Realm, The Beginning

Are there any novels with finger techniques that grow stronger? Like the Immortal-Slaying Finger: the first finger shakes heaven and earth, the second shatters the void!