百度 而在北关闸以下河段，以保障城市副中心水环境为重点，加快污染源溯源治理，还清水质，加强通州区城北水网、城南水网、两河水网建设，构建城市副中心蓝绿交织、清新明亮、水城共融的城市景观。
China announced the establishment of Xiongan New Area on April 1, 2017, aiming to build it as a low-carbon, intelligent, livable and globally influential city where people and nature exist in harmony. One year after the announcement, the new economic zone about 100 kilometers southwest of Beijing has made great progress. Aerial photo of the Xiongan Citizen Service Center under construction. (Photo provided to China News Service)
