The "Xijiang" in ancient poetry refers to the main stream of the Pearl River, which originated in Yunnan Province, flows through Guangxi and Guangdong, and joins other tributaries such as Dongjiang and Beijiang in the downstream. In Yu's "Looking at Jiangling Peace", "I remember my heart like the Xijiang River, and it flows eastward day and night", which is used to describe sad feelings like the water of the Xijiang River that keeps flowing forward forever.