Since then , Changwon , Masan , and Jinhae Cities have integrated into a greater metropolitan area with a population of 1.1 million in 2010 .
Changwon is held at the end of September .
Since then , Changwon , Masan , and Jinhae Cities have integrated into a greater metropolitan area with a population of 1.1 million in 2010 , and it is held at the end of September .