A Hundred Years of Cultivation: I Just Emerged From Seclusion, and You Say I'm Invincible?

He transmigrates to a fantasy world and becomes an elder tasked with guarding a pagoda at the Xuanwu Sect. He thinks he’ll live out the rest of his days in peace, but six hundred years later, he activates the Sign-In System. 【Ding! Congratulations, Host! You have successfully signed in at the Demon-Suppressing Pagoda of the Xuanwu Sect! Reward: Ancient Divine Physique!】 【Ding! Congratulations, Host! As this is your first sign-in, you receive a sign-in bonus!】 【Ding! Congratulations, Host! You have received the sign-in bonus reward: Ancient Star God Physique!】 【Ancient Star God Physique: One of the greatest divine physiques in the world! With this physique, your comprehension improves ten thousandfold! In addition, one hundred thousand stars form within your body! You can channel your spiritual energy into these stars to shatter them, doubling your physical strength each time!】