12 hot air balloons carrying the national flags of 11 countries participating in the 31st SEA Games and the image of Sao La - the mascot of this year's sports festival, were lit up outside My Dinh National Stadium right before the opening time.
This is one of the remarkable highlights of this year's SEA Games, which has attracted a lot of attention from Hanoi citizens as well as athletes and fans./.
VNA
