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The government will improve the urban residence permit system to help the integration, ensure stable employment and safeguard the rights and interests of migrant workers, Li said in a letter to a ceremony held to honor migrant workers.
Alerts will be categorized by Air Quality Index (AQI) readings. A red alert will be issued when the daily average AQI is forecast to rise above 500 for a day or longer. A red alert can also be issued when the daily average is forecast to climb above 200 for four straight days or longer, or when the daily average exceeds 300 for two days or longer.
Hong Lei made the comments at a routine press briefing following media reports that Beijing had installed advanced surface-to-air missiles on the island.
Given the complicated situation this year, Li said he hoped the region would continue to take the lead in reform, cutting red tape, eliminating barriers and facing global competition.
He said the cleaning would take more than 30 hours.
来源：资阳报