《资治通鉴·梁纪·梁纪六》
于是，朝廷制定了严厉的边兵制度，规定不允许边镇上的人浮游在外，于是少年人不能从师学习，成年人不能出外游宦，只有这些人不被当做人看待，说起来便让人心酸落泪！
乃峻边兵之格，镇人不听浮游在外，于是少年不得从师，长者不得游宦，独为匪人，言之流涕！
Hence, the imperial court formulated a strict border military system, stipulating that people in the border town were not allowed to float outside, so teenagers could not study with teachers, and adults could not go out to travel as officials. It was heartbreaking to say that these people were not regarded as human beings!