The first Expo was held at London in 1851
The World Expo is “the best opportunity for every host country to make every effort to demonstrate its social, economic and cultural achievements and prospects to the world” and a vivid reflection of the progress of human society as well as its dream for the future.
It is a super-scale international exposition hosted by the government of the country and participated by many other countries and international organizations all over the world. Spanning over a long time and attracting the participation of many countries, the super-sized and influential World Expo is renowned as “the Olympics in the fields of economy, culture and science and technology”.
It is even listed by some as one of “the Top Three Super Events in the World” together with the Olympics and FIFA World Cup. The World Expo lasts for a long time, but what enables it apart from others is that as a national behavior, it is bid and hosted by a country’s government.
Since the entering into force of the 1928 Convention Relating to International Exhibitions, the Bureau International Expositions (BIE; English: International Exhibitions Bureau) has served as an international sanctioning body for world’s fairs. BIE-approved fairs are of three types: universal, international, and specialized. They usually last from three weeks to six months.