In his past life, Xie Linxiao, who suffered endless exploitation, transmigrated into the immortal cultivation world, binding the strongest lying-flat system; the more he lies flat, the stronger he becomes. Joining the Yunxiao Sect just to slack off, he is forced to take the reincarnated female emperor Lin Yingying as his disciple. Teaching her the lying-flat code, taking his disciple to soak in hot springs and eat barbecue, his cultivation surprisingly skyrockets all the way. In the sect grand competition, he precisely controls his score to avoid heavy burdens; the hard-worker investigator gets assimilated instead. The Taichu Ancient Mine crisis and demon clan conspiracy erupt one after another; he acts behind the scenes and resolves them easily. To guard his lying-flat ideal, Xie Linxiao breaks the code, instantly killing the involution heavenly lord with a power surpassing the great emperor, incorporating the demon clan with a four-day work and three-day rest schedule, retiring with success, and continuing his lying-flat life.