《魏书·列传·卷九》
不一会儿，有两只大乌从南方飞来，一只飞向行宫，一只飞向幕府，都被人捕获。
须臾，有二大鸟从南而来，一向行宫，一向幕府，各为人所获。
Soon, two big ravens flew from the south, one flew to the palace, and one flew to the General's office, and they were both captured.