建筑工程部于二月二十八日至三月九日在天津市召开了全国城市排水会議。参加会議的有全国九十多个城市的领导干部、工人和技术人员等二百多名代表。这是一次“三结合”的会議。是突出政治,以政治统帅业务的革命化工作会議。到会代表听了“王铁人” The Ministry of Construction Engineering convened the National Urban Drainage Conference in Tianjin from February 28 to March 9. More than 200 representatives including leading cadres, workers, and technicians from more than 90 cities nationwide attended the meeting. This is a “three-in-one” meeting. It is a revolutionary work conference that highlights politics and political command. The delegates listened to “Wang Tieren”