Full-Time Magister: Starting with a Celestial Body (Sign-in Event)

Lu Jie couldn't understand; all he did was smoke a popsicle, how did he end up transmigrating?
Oh, two 10-pulls to max out life and spirit? Well, that's fine then. Since we're already in this magical world, we might as well make the best of it.
However, on the very day he awakened his magic, he received a sign-in system. Whenever he signed in at a specific time and place, he would receive rewards from all the heavens and the myriad worlds.
When magic awakens.
[Ding! Host's awakened magic detected. Initiating daily check-in. Congratulations, host, on obtaining the Immortal Body!]
During outdoor training.
[Ding! Host has checked in. Congratulations, host, you have obtained the Golden Light Mantra!]
When checking in in Shanghai.
[Ding! Host has checked in. Congratulations on obtaining the Azure Lotus Earth Core Flame!]
Signing in at Jinlin, signing in at the ancient capital, signing in at Parthenon...
By signing in at different places, Lu Jie obtained all sorts of treasures, and eventually embarked on a path of following his heart and desires without any attachments.