《元史·列传·卷七十八》
一年后，改任陕西、四川道提刑按察使，澄建议： 不孝有三，无后为大。
居一年，改陕西四川道提刑按察使，建言： 不孝有三，无后为大。
A year later, he was appointed as the Judge of Inspector of Shaanxi and Sichuan. Cheng suggested: There are three kinds of disrespect, and the greatest is not having children.