A Guide to Surviving After You Transmigrate into a Book: The Happiness Exchange System

While pulling an all-nighter to write his thesis, Lin Mo is engulfed in blue light and transmigrates to Shanghai during the Republican era. (The first and second worlds are complete.) Caught in a chaotic age, he is isolated and helpless, with his life hanging by a thread. By chance, he obtains a golden finger that lets him exchange for skills, trial cards, and rare items. The System can scan targets' favorability and happiness levels, guiding his next move. With his wits and abilities, he overcomes crises and saves people from desperate situations, and his reputation quietly spreads. While others fight desperately to survive, he calmly turns things around and wins trust and devoted followers. He travels through twelve worlds. When his total happiness score surpasses its limit, he unlocks the hidden ending: laughter fills an ordinary restaurant, and he has no regrets in this life.