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"Chinese New Year is the most important day for all Chinese. It has been celebrated in San Francisco since the first Chinese immigrants came here in the mid-19th century," Luo said.

"Covering sandy earth with gravel can reduce water evaporation and sandstorms, and protect plants from diseases, insects and pests," said Zhang Shouge from the city's agriculture department. "It is a traditional but scientific method that farmers discovered in the ongoing battle with drought."

"Consumption shot up 13.3 percent in the first two months of 2018 chiefly due to unusual weather conditions," he said.

"China's economy, especially its manufacturing industry, has become highly diversified thanks to the sound supportive system and fast-growing domestic markets after decades of development," Tu said.

"Chinese President Xi Jinping's speech at the 2017 World Economic Forum at Davos is very important. He spoke very much in favor of globalization, cross-border cooperation, and about addressing shared problems. This is good for China's soft power," Dube said.