I Signed In for a Century in the Imperial Harem and Became Unrivaled!

Yang Beishou transmigrates to the Great Qian Dynasty and becomes a civet cat. He only wanted to be an ordinary civet cat, but at birth he was switched with the real crown prince and became a civet cat crown prince instead. From the start, he is banished to the Yeting Palace, but luckily awakens a sign-in System. As long as he signs in anywhere in the Yeting Palace, he can receive all kinds of rewards. “Ding! Sign-in successful. Obtained the Sun and Moon Sacred Body!” “Ding! Sign-in successful. Obtained the Yin-Yang Great Restoration Pill!” “Ding! Sign-in successful. Obtained the Great River Sword Art!” Yang Beishou thinks it's pretty nice to be a civet cat, quietly keeping his head down. But who could have known that a hundred years later, demons and barbarians would wreak havoc, the Celestial Dragon Clan would rise, and heroes across the land would contend for supremacy, leaving the Great Qian Dynasty on the verge of collapse? Yang Beishou, hiding away in the Yeting Palace, is finally forced to step forward. “I'm just an ordinary civet cat! The world belongs to you. I only want to stay here in the Yeting Palace and sign in in peace!” “...”