Warsaw is the capital of the Republic of Poland, the capital of Mazovsky Province, Poland's political, economic, cultural center and largest city. Located on both sides of the Visva River, central Poland, is also the headquarters of the European Union, the ninth largest capital city of the European Union, one of the 19 first-tier cities in the world. Warsaw is also a famous historical city. The famous Warsaw Convention was signed here. Warsaw is the main trade route between China and Europe. It has been a very prosperous place since ancient times. Warsaw is one of the best greening cities in the world. Many parks and green spaces have a complete greening system. Personally, I like Poland, a country that has gone through many vicissitudes of life.