Wudang Signed for 80 Years, I Am Invincible

Qin Ren traveled through time and became a handyman disciple of the deposed Linghai in Wudang Mountain. He thought that a miserable life was waiting for him, but he didn't expect that the sign-in system was activated, and he could sign in anywhere to get rewards. In front of Wudang Zixiao Palace, sign in and get... [Nine Yang Magic] Sign in at the Wudang Sutra Pavilion and get... [Taiyin Scripture] Sign in in front of Yuxu Palace and get rewards... [Thunder Tribulation Pill] [Body Boosting Pill] Sign in outside the Demon Locking Tower and get the reward [Celestial Silkworm Magic]... Qin Ren, with the purpose of not leaving until he was invincible, spent eighty years in Wudang Mountain. It wasn't until the demonic and demonic armies invaded the human territory, broke into the Celestial Empire, and started killing hundreds of millions of innocent creatures that Qin Ren finally took action...