《梁书·列传·卷十八》
康绚认为他说得对，开洞向东注水，又派人到魏国去施反问计说： 梁朝人最怕开洞，却不怕在野地襄打仗。 
绚然之，开湫东注。又纵反间于魏曰： 梁人所惧开湫，不畏野战。 
Kang Xuan thought he was right to dig a hole to pour water into the east, and sent someone to the State of Wei to use a counter-question to say: The people of Liang Dynasty are most afraid of digging holes.