Sign in to the Sky: I, Yao Lao, Am Invincible at the Beginning

The most famous alchemist in the mainland, but only a trace of his soul remains in the original timeline. But no one knows that his body was taken over by a Blue Star traveler "Li Yao" more than a hundred years ago, and he was also bound to the "Wanjie Sign-in System". For a hundred years, as long as he signed in at the designated place, he could get the innate spiritual fire, the imperial elixir prescription, and the fragments of the Great Law... His strength has been soaring, but he deliberately suppressed his realm and used the mainland as a playground.   Now that the plot has begun, Xiao Yan comes to break off the engagement as scheduled. The time traveler Yao Lao smiled and flicked out a wisp of bone spirit cold fire: "Disciple, don't panic, I am an invincible master, you can do whatever you want." So—— Nalan Yanran: "Thirty years in Hedong? My master said you have to lie down today!" Yunshan: "Douzong cannot be humiliated? My master slapped him into a horse with fighting spirit." Soul Emperor: "I have planned for thousands of years to eventually become the Dou Emperor... Wait, Yaochen, when did you become the Dou Emperor?" "Disciple, please sign in to the Jiama Empire to give you Emperor Yan. Let's go and destroy a sect for fun?" "Xiao Yanzi, the Zhongzhou Alchemy Conference is not interesting. I have signed you up for the 'All Heavens and Worlds Alchemy Master Competition'." When Xiao Yan finally transformed his fighting spirit into wings after all the hard work, he discovered that his teacher had already left a legend in the world: ——"That gentleman once caught Kun in the Sea of Chaos and cooked a phoenix in the Nine Heavens. His title is: Signed to the Heavenly Lord!"