Before declaring a character that isn't yours a Mary Sue, or if you get people declaring your Mary Sue character for questionable reasons (eg, the character is simply a powerful female)...
Nansha District, is a district of Guangzhou, China. Port of Guangzhou is located within the southern portion of the new area. The Nansha Technology Development Zone was carved out of Panyu District in 1993. In 2005 it was named Nansha District.
Hainan Province. Hainan Island is the second largest island in China, which is situated on the Nanhai Sea (South China Sea) and facing Guangdong Province across Qiongzhou Strait. Hainan Province, established in 1988, consists of Hainan Island, Xisha Islands, Zhongsha Islands, Nansha Islands and the vast sea areas around them.