《论衡·卷六·雷虚篇》
况且君王处决死囚在秋天，天用雷杀人在夏天，这是君王用刑违背大时。
且王断刑以秋，天之杀用夏，此王者用刑违天时。
Furthermore, feudal lords execute death row prisoners in the fall whereas Heaven kills people with thunder in the summer. This shows that feudal lords' execution of punishments is out of season.