Key work on joint prevention and control of air pollution in the beijing-tianjin-hebei region and its surrounding areas was published in 2015Tianjin implements the "state five" standard for motor vehicles◆ zhengzhou, henan province, shall appoint reserve cadres to supervise the control of air pollution◆ "one vote veto" is implemented for the assessment index of adjusting gas control in gansu province◆ restrictions in Paris focus on the combination of "control-thinning"