Sao Paolo is the largest city and largest industrial center in South America, the capital of Sao Paulo State, and one of the four largest cities in the world. It is located on the plateau with an altitude of more than 800 meters on the edge of the cliff of the Mar Mountains in the southeast of the border, 63 kilometers away from the outer port in the southeast, with an urban area of 1,624 square kilometers, and Greater Sao Paulo, including the suburbs, has a population of more than 13 million square kilometers.

Saint Paul was the first village of the Indians. On January 25, 1554, the Portuguese colonists came here and discovered its ideal geographical location, and built the town, because of the day of the Catholic commemoration of Saint Paul, the town was named Saint Paul. In 1711, Saint Paul established the city. In 1822, Brazil declared independence here. By 1880, Saint Paul was still only a town of 2 square kilometers and 40,000 inhabitants, but by the end of the 19th century, due to the large area of coffee cultivation and a large influx of foreign immigrants, the town began to develop rapidly, and by 1940 the city population had exceeded 1.3 million. According to reports, Saint Paul was the fastest-growing city in the world.