Sign-In in the Great Tang Zhenguan Era

Li Yi, a modern-day overworked programmer trapped in the 996 grind, dies suddenly from working overtime and transmigrates into the body of a poor young man with the same name outside Chang'an in the early Zhenguan era. The moment he wakes, the Myriad Worlds Sign-In System activates: daily sign-ins grant resources, while signing in at specific places or events unlocks incredible skills. With a modern mind and the System's help, he rises from hunger and cold to immense wealth, only to discover his true origins: he is the eldest son of Li Shimin and a palace maid, cast into the common world during a palace coup. From then on, princesses from every kingdom compete to marry him, while the powerful rack their brains to curry favor with him. But Li Yi only wants to ask, “Can I get a pension from signing in?”