《明史·列传·卷十四》
近海百姓家有四口者抽一为兵，组成军队戍守海边，便不必烦劳军队。 
近海民四丁籍一以为军，戍守之，可无烦客兵也。 
Every family within the coastal area with at least four family members must contribute one person as a soldier to form an army to guard the coast, and there will be no need to bother the military.