Students of the roller skating team are trained by their coach on the playground of No.6 Experimental Primary School in Zunhua City, north China's Hebei Province, June 11, 2019. The No.6 Experime

　　Aerial photo shows students of the roller skating team on the playground of No.6 Experimental Primary School in Zunhua City, north China's Hebei Province, June 11, 2019. The No.6 Experimental Primary School in Zunhua introduced roller skating into school as a community activity for students. (Xinhua/Liu Mancang)