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"Every day we receive thousands of phone calls, sometime as many as 10,000 a day, a growth of 6.1 times year-on-year from local residents, voicing their complaints or giving suggestions to help solve specific problems in urban management, such as solutions to traffic jams, environmental protection and garbage disposal," said Wu Qiuyun, deputy secretary-general of Haikou, which is the island province's capital city. The city started to build its smart city management platform with the hotline number 12345 in 2017. The platform, which also is a digital center, integrates all information and data from government departments, such as real time traffic conditions and the location of potential safety hazards at construction sites or gas stations. All the data are visualized with real time videos.

"Dirty" and "chaotic" were Du's first impressions of the neighborhood. Unlicensed traders blocked the roads, meaning people could not park their cars, and feral cats and dogs often appeared on the streets. As a result, some people simply bought apartments to rent to tenants.

"During the upcoming WIC, we are expecting discussions on how tourism services can be landed and circulated more smoothly in the world with the help of the internet. For example, a more comprehensive e-payment system and a more convenient inbound tourism service platform can be built," Liang said.

"Emerging technologies including unmanned delivery will be the core engine driving its businesses in the future," he added.

"Even though China does not lack capital, it is necessary to boost inbound flows of foreign capital, pushed by upgrading industrial structure, demand for advanced technologies and global resource allocation," said He Manqing, director of the Foreign Investment Research Institute of the Beijing-based Chinese Academy of International Trade and Economic Cooperation.