A worker cleans a toilet at Zhangjiagang Experimental School in Suqian City, east China's Jiangsu Province, June 26, 2018. China put efforts to build or upgrade toilets over the past year and significant progress has been made. In some urban cities, toilets with modern amenities inside have been built. In Suqian City, 27 pilot toilets which are equipped with free WiFi access, ATM machines, mobile phone chargers, etc. are put into use for better serving the residents. (Xinhua/Ji Chunpeng)