Which city does zs represent in the novel?

Zs stands for Zhoushan City or Zhongshan City.

Zhoushan's pinyin is Zhoushan.

The pinyin of Zhongshan is: Zhongshan.

Introduction of place names:

Zhoushan is a prefecture-level city under the jurisdiction of Zhejiang Province, between east longitude12130 ′ ~123 25 ′ and north latitude 29 32 ′ ~ 3104 ′. It is one of the two prefecture-level cities in China, the whole city 1390. Zhoushan, with a total area of 22,200 square kilometers, is the prefecture-level city with the largest municipal area and the smallest land area in Zhejiang Province.

Zhoushan is the largest seafood production, processing and sales base in China, and is known as "Donghai Fish Warehouse" and "China Fishing Capital". With numerous ports, vertical and horizontal waterways and flat water depth, it is one of the few natural deep-water ports in China. Zhoushan tourism integrates marine cultural landscape and Buddhist culture, with Putuo Mountain, Shengsi Mountain, Daishan Mountain and other scenic spots, which constitutes the unique mountain and sea scenery of "City of Thousand Islands".

Zhongshan City is one of the four prefecture-level cities without districts in China. Formerly known as Xiangshan County, it was founded in1152; 1925 It was renamed Zhongshan County in memory of Sun Yat-sen, located in the lower reaches of the west and Beijiang rivers in the south-central part of the Pearl River Delta, bordering Panyu District of Guangzhou and Shunde District of Foshan City in the north, Jiangmen City, Xinhui District and Doumen District of Zhuhai City in the west, Zhuhai City in the southeast, and Shenzhen City and Hong Kong Special Administrative Region across the mouth of the Lingdingyang Ocean in the east.

Zhongshan is a famous historical and cultural city in China. Xiangshan culture, which originated in Zhongshan, is an important source of modern culture in China, enjoying the reputation as the hometown of Guangdong folk art (Cantonese opera) and overseas Chinese. More than 800,000 overseas Chinese and compatriots from Hong Kong, Macao and Taiwan live in 87 countries and regions on five continents.