Xuanhuan: I Fused with the World Tree from the Start

Worlds Collide, Wars of Conquest, Growing Stronger Through Battle, An Expansive Universe

Any recommendations for something similar?

The Protagonist Transmigrates as a Tree or Plant, Spreads Spiritual Qi, and Brings About Spiritual Qi Revival

The protagonist is the Origin Tree of spiritual qi revival and transcendence. Spiritual qi and supernatural power are born as they automatically spread from the protagonist's breath.

Any Novels Where the Protagonist Opens an Inner World Within Their Body to Attain the Dao?

Are there any novels about cultivating an inner world and proving the Dao through it?

A Pocket Dimension and a World Tree

Ranching.

Xuanhuan, One Female Lead, Both Leads Devoted to Each Other, with No Ambiguity

A Dantian Expands into a Space, Evolving into a Primordial Universe

The pocket dimension evolves into a primordial universe.

Creating an Inner World, From a Small World to a Great World, a Minor Thousandfold World, and Finally the Void

Looking for books like I, the Heavenly Dao, Build the Strongest World. The protagonist creates a world inside his body. It should be a System story with a vast setting, from small worlds all the way to the void. Ongoing and not yet completed.

The Protagonist Creates an Inner World, Masters the Three Thousand Great Dao, and Refines It

Ideally, it should feature cultivation of both the immortal and martial paths.

A Tree Borrows the Nation's Power From the Start and Is Designated as the 002Nd Heaven-Connecting Jianmu