Sign in with the Demon Lord: Zhang Wuji's Conquest of the Heavens

Traveling through Yitian, Zhang Wuji awakened the sign-in system, spent ten years on an isolated island to build a demonic heart, gained magical powers, and had hundreds of thousands of dragon cavalry waiting for orders. Returning to the Central Plains, he defeated the five elders of Kongtong with one palm, defeated Master Jiejie with three moves, dyed Wudang Mountain red with blood, and his demonic reputation shocked the world. From the martial arts supreme to the founding emperor, Zhang Wuji defeated Bei Yuan with iron blood, suppressed the seven kingdoms, and established the Great Demon Dynasty. Then he shattered the void, conquered the heavens, gathered the beauties of all realms, and fought against chaos with the supervisors of the heavens.