Security has been a major issue of concern, especially after a dozen people were arrested last week in Rio over a very amateur terror plot. Things, not that serious, but there have been other cases -- Friday four Chinese Anti-doping officials were robbed in broad daylight.

Also Chinese hurdler Shi Dongpeng had his luggage stolen in the lobby of his hotel during checking in. So, to help its citizens in Brazil, the Chinese Embassy has launched a series of emergency protocols to try and protect them during the Games.

The staff at the Chinese embassy in Rio, say safety of Chinese citizens in the Olympic city will be their main concern for the next month. They had a similar experience two years ago during the Brazil World Cup.

The Embassy has established a hotline with the local police forces, and published a series of safety guide instructions translated into Mandarin, which are available on their website and social media accounts.

More than 200 volunteers have also been chosen to help Chinese tourists in the city during the Games. And some supplies from China are also available, including mobile communication devices, clothes, and various household appliances.

"We have four official embassy and consulate locations in Brazil. Together we will cooperate as one to protect our citizens here. We will try our best to ensure a safe and healthy environment for our athletes, press, and travelers," said Li Jinzhang, Chinese Ambassador to Brazil.

"I strongly suggest that Chinese citizens increase our consciousness about risks and fully prepare ourselves before coming here, because for most athletes and ordinary Chinese people, we haven't had much experience in South America before."