Guangzhou covers an area of 7,434.4 square kilometers and has 11 municipal districts, namely Yuexiu District, Liwan District, Haizhu District, Tianhe District, Baiyun District, Huangpu District, Panyu District, Huadu District, Nansha District, Zengcheng District and Conghua District. Guangzhou has been rated as the first-tier city in the world by GaWC, the most authoritative research institution in the world. Guangzhou&;s headquarters economic development ability and the total stock of Grade A office buildings rank among the top three in China. There are 30,000 foreign-invested enterprises in Guangzhou; There are 297 Fortune 500 companies, of which 120 have their headquarters or regional headquarters in Guangzhou [7-8]. There are more than 3,000 Internet enterprises in Guangzhou, and the revenue of online game industry accounts for nearly 30% of the whole country. Guangzhou&;s hard technology development index ranks among the top three in China; In 2016, the increment of high-tech enterprises ranked second in the country, second only to Beijing.