Start with the Cultivation of the Ancestral God and Walk the World As a Guardian

Lu Ming traveled to a fantasy world and signed in to the check-in system, embarking on a passionate and invincible journey. In less than a century, Lu Ming ascended to the Chaos Realm and became a dominant overlord. It was thought he would continue his pursuit of the Great Dao, but... As his cultivation level improved and the system's check-in rewards became increasingly better, he decided to lay low.

With daily sign-ins, Lu Ming's cultivation gradually improved. When he reached the Ancestral God realm, the system finally found an opportunity to trigger a task, and the task turned out to be: to protect the lower realm!

Dimensionality reduction attack? Don't blame me, it's the system that made me do it.

Lu Ming: I walk the world as a protector, witnessing all the ups and downs in the world, and slaying all the invading enemies!

(Invincible article! Although the protagonist still has a realm in the early stage, it is also a dimensionality reduction attack, and it won’t be long before the realm is no longer needed)