The city of Iguazu is located at the confluence of the Parana and Iguazu rivers, which border Brazil, Paraguay and Argentina, and can be seen at a glance. The city area is 630 square kilometers (including Iguazu National Park accounting for 20% and Lake Itaipu accounting for 30%). The urban area is 85 square kilometers, with an altitude of 183 meters and a population of 250,000. The average annual temperature is 27.7 °C, the highest temperature in January every year, the average temperature is 28.1 °C; the coldest in July, the average temperature is 14.6 °C, and the annual rainfall is 1712 mm. The average humidity is 80% per year. Iguazu is Brazil's second largest tourist center, with an average annual visitor reception of about 7 million people, mainly in business and tourism. Iguazu has about 3,000 overseas Chinese, most of whom do business in the Oriental City on the Paraguay side and live in Iguazu.