These past few years, in order to write records of mountains and rivers, Chang Yu’an traveled around with Yue Changgou to experience the customs and practices of various places.
He had been on the border of Nanyue when he received the news that Ye Yunting had been selected by the Directorate of Astronomy to be married to Prince Yong’an. As soon as he got the news, he took Yue Changgou and rushed back to Shangjing without rest. But they arrived a step too late.