This year's FLL Robot Competition Tianjin invitational tournament was held in the Tianjin Meijing Convention Center on March 14. Middle schools, primary schools and robot clubs in Tianjin and Hebei province contributed more than 50 teams and up to 170 competitors to the game.

FLL, which is short for First Lego League, is a robot engineering competition presented by First non-profit organization based in the US and Lego Group from Denmark. The game is a global robot competition that invites children aged nine to 16.

A participant holding his robot prepares to compete in the game in the Tianjin Meijiang Convention Center on March 14. [Photo by You Sixing/Xinhua]

Participants operate robots during the game in the Tianjin Meijiang Convention Center on March 14. [Photo by You Sixing/Xinhua]

The robots of the participants compete during the game at the Tianjin Meijiang Convention Center on March 14. [Photo by Zhou Qinlong/Xinhua]