How big is Chaoshan? It would be better to have a map to show it.

The Chaoshan region is located in the southeast coast of Guangdong Province, belonging to the Chaoshan cultural area and the dialect area of the Teochew language, the ancestral home and concentration of the Chaoshan folk, the birthplace and flourishing place of the Chaoshan culture, and the area where the Teochew language is spoken and the popular Chaoshan culture is popular, including the four cities of Shantou, Chaozhou, Jieyang, and Shanwei, with a total resident population of more than 18 million people and a total area of 16,189.5 square kilometers.