《宋史·列传·卷一百九十六》
明年，魏了翁调任校书郎，他以双亲年老请求补任外官，这样得知嘉定府。
明年，迁校书郎，以亲老乞补外，乃知嘉定府。
The following year, Wei Liuweng was transferred to the position of Proofreading Official. He requested to be appointed to a foreign official because his parents were old, and that's how he learned about Jiading Mansion.