Although this was the first time the International Congress of Mathematicians was held in Rio de Janeiro, Rio de Janeiro had hosted various other international math conferences before.
According to Wang Shicheng, this was his seventh time visiting this city. Therefore, he was quite familiar with the city.
Wang Shicheng called his other Chinese mathematician friends, who came here to do a 45-minute report. The original squad of four became a squad of ten. Academician Wang led the way, and the squad went to a Sichuan restaurant near the hotel.
The owner of the restaurant was a Chinese person, and apparently, he used to work for China National Petroleum. He then found out it was more profitable to run a restaurant here; therefore, he resigned and started his own restaurant. Once his business started to take off, he migrated and started a family here.