Mazhang central primary school. According to the inquiry of Zhanjiang Education Bureau, Ruiyun City Garden is located in Mazhang Central Primary School in Zhanjiang, a prefecture-level city in Guangdong Province, formerly known as Guangzhou Bay, also known as Gangcheng. It is located at the southern tip of Chinese mainland and the southwest of Guangdong Province. Most of the land in Zhanjiang consists of peninsulas and islands, and the terrain on the central axis is generally high.