Sign-In from the Start, Becoming an Immortal in Secret

Li Dalong, a young man from the Blue Planet, accidentally transmigrates to the Cultivation World. When he wakes, he discovers that his sect has crippled his cultivation and imprisoned him in a forbidden area behind the mountain. There, he unexpectedly obtains a sign-in System and restores his cultivation. Using the System to rapidly increase his power, he becomes a mysterious senior of the Zhengqi Sect, slaying demon clans, demon saints, and powerful enemies, and repeatedly saving the sect. When the world undergoes a cataclysmic change and spatial rifts appear, extraterrestrial demons invade. As he fights them, he discovers the worlds beyond and the Immortal Realm. He enters the Immortal Realm and falls in love with Ye Wuxia, the flawless fairy and beloved daughter of the head of the powerful Wuji Immortal Sect, only to face the sect's oppression. Later, he goes into hiding in the Immortal Realm to quietly grow stronger. He also falls in love with Ke Xialing, a disciple of the Yunxia Sect, and then takes refuge within the sect to build up his strength. Through conflicts with the powers of the Immortal Realm and battles against extraterrestrial demons, he grows until he stands at the summit of the Immortal Realm and enters the Thirty-Three Heavens, where he roams freely with his beloveds!