If you force me to take the blame, I'll spend a day in jail and gain a year's worth of spi

Zhang Yu's parents and four younger sisters favored their younger brother, forcing him to go to jail in his place.
After Zhang Yu went to prison, his cultivation level skyrocketed, increasing by a year's worth of cultivation every day. He was determined to use his accumulated power to his advantage.
Zhang Yu's once-glorious parents and four younger sisters became impoverished immediately after he went to prison, crying and begging him to be released.