《资治通鉴·梁纪·梁纪十四》
东魏的部队把他们围了足足十几层，蔡拉弓搭箭，抵抗四面八方的敌人。
东魏人围之十馀重，祐弯弓持满，四面拒之。
The Eastern Wei troops quickly encircled him with a force ten-layers thick. Cai drew his bow and notched an arrow, and withstood the enemy pressure from all sides.