Complex sentence: Zengcheng' District is a former county level city in Guangzhou, Guangdong Province, China that was upgraded to a district under the jurisdiction of Guangzhou on 12 February 2014.
Split into simpler sentences: Zengcheng' District, formerly Zengcheng City, is a district of Guangzhou, Guangdong Province, China. It was upgraded from a county level city to a district under the jurisdiction of Guangzhou on 12 February 2014.