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Tianjin has seen rapid economic growth, with its gross domestic product growing at an average annual rate of 16 percent in the past five years, and aims at a regional economic hub, an international port and an eco-friendly city, Huang said.

The central government pledged last month that it will prioritize stabilizing economic growth, warning that the economy faces "increasing downward pressure."

In recent years, China has increased investment to promote scientific and technological development, and the sum reached 861 billion yuan (135.6 billion U.S. dollars) last year, Liu said, adding that progress in relevant fields have made major contributions to the country's economic and social development, the improvement of people's livelihoods as well as the development of civilization.

The epicenter is determined at 43.4 degrees north latitude and 84.8 degrees east longitude, a mountainous area along the border of the region's Hejing and Xinyuan counties.

The practice caused standstills at toll gates on Sunday.