Shenzhen, referred to as “Shen”, nicknamed “Pengcheng”, is one of the four first-tier cities in China. It is a provincial city under the jurisdiction of Guangdong Province, a city with separate plans, a sub-provincial city, a national regional central city, a super-large city, and a nationality of the State Council. Economic center cities and international cities, national innovative cities, international technology industry innovation centers, global ocean center cities, international integrated transportation hubs, one of the four central cities in Guangdong, Hong Kong and Macau, and the three national financial centers in China One.