《资治通鉴·唐纪·唐纪二十七》
诸王每天早上在侧门朝见天子，退下后便聚在一起进膳饮酒、斗鸡、击；或者是到京城近郊去狩猎，或者是到别墅里观赏游玩，奉命前去问候的宦官络绎不绝。
诸王每旦朝于侧门，退则相从宴饮、斗鸡、击球，或猎于近郊，游赏别墅，中使存问相望于道。
Every morning, the princes would meet the emperor at the side gate to pay their respects, and after leaving, they would gather together to dine, drink, fight, shoot arrows, or go hunting in the suburbs of the capital, or go to a villa to sightsee, with the eunuchs who had been sent to greet them coming and going in an endless stream.