Zhengzhou, previously romanized as Chengchow, is the capital and the largest city of Henan Province, China. With a population of 12.6 million people in 2021, it is China's 11th largest city by population. Zhengzhou is situated in north-central Henan Province at the eastern foothills of the Xiong'er Mountains and on the southern bank of the Yellow River; where its valley widens into the North China…