I'm Uncle Nine's First Disciple, Invincible from the Start

(Uncle Jiu + Yizhuang + System + Cultivation + Invincible.)

At three, he reached the ninth level of Qi Refining. At four, Foundation Establishment. At five, Golden Core.

At six, he reached the Grotto-Heaven Realm. At seven, he reached the Void Return Realm. At nine, he reached the ninth heaven of the Void Return Realm.

At ten, he reached the sixth heaven of the Tribulation Transcendence Realm.

At twenty, he became an Eighth Tribulation Loose Immortal.

The cultivation realms are Qi Refining, Foundation Establishment, Golden Core, Grotto-Heaven, Void Return, Tribulation Transcendence, and Nine-Tribulation Loose Immortal.

Each major realm has nine minor stages, from the first to the ninth heaven.