Please, I don&;t know very well. In the past, I only knew that Premier Zhou often said the Canton Fair. It was called Yangcheng at that time, and later called Huacheng. It is the gateway and window of Central South China. Since the 1980s, peacocks have been flying southeast, which may be one of their resting places. Later, it developed rapidly and even left Tianjin and Chongqing behind. No one mentioned Beijing, Shanghai and Tianjin, and it was renamed Beishangguang.