《明史·志·卷六十八》
二十一年诏令卫所核实军队，有隐瞒自己儿子以养子代替的，不允许。
二十一年，诏卫所核实军伍，有匿己子以养子代者，不许。
In the twenty-first year the military府s were ordered to inspect the military. Hiding one’s son and replacing him with an adopted one was not allowed.