Edited sentence: "Black dragon river").Chen Chu visited mainland China to promote the Games.In April 2009, mayor Chen promised to improve the water quality of Chienchen River, a river that the locals called "Heilungchiang" (; lit.She said that NT$120 million (approximately US$3.6 million) will be spent to complete the task.She vowed to make Kaohsiung a city that is not just notable for the cleanliness of its Love River