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"But with the social and economic development, water shortages, damage to aquatic ecosystems and water contamination have become the main issues," he added.

"Chen's behavior is a breach of administrative discipline and the norms of being a teacher," said Ruan Chuansheng, a law professor at the Party School of Shanghai CPC Committee.

"China has undertaken substantial efforts to improve the domestic business climate for small and medium-sized enterprises, maintaining an active pace of reforms," said Martin Raiser, World Bank country director for China.

"But this virus remains extremely dangerous," he said. "Early evidence suggests most of the world's population remains susceptible. That means epidemics can easily reignite."

"China has done its best, from sharing information on the virus and the disease to providing medical resources to foreign countries, and now it is committed to developing vaccines as a global public product, with actual action," Shi said.