A missile is launched during the International Army Games 2017 in Korla, Xinjiang Uygur autonomous region, Aug 1, 2017. [Photo by Zou Hong/China Daily]

The Clear Sky event - the ultimate test for air defense units in the International Army Games 2017 kicked off in Korla, Xinjiang Uygur autonomous region today.

Military forces from seven countries, including China, Russia and Iran, participated in the technical round of the event. Each team with five crew members is required to drive a Chinese-made infantry fighting vehicle through a course built in the Gobi Desert with different obstacles while taking down targets simulating a moving fighting vehicle, a paratrooper and missiles.

"The crew members need to use a variety of weapons for different targets designed and based on actual combat situations. It is the ultimate test for their skills and stamina," said Hong Jiangqiang, chief judge of the event.

More than 6,000 spectators came to the venue to cheer for the People's Liberation Army Ground Force that was the fourth team to compete today, which also marks the 90th anniversary of the founding of the People's Liberation Army.

Team China's performance, especially the crew's shooting skills during the race, has wowed the crowd. The crew members hit the most targets with pinpoint accuracy.

"There is no trick in firing air defense missiles but to practice and practice more in training for actual combat," said Lu Donghua, a gunner on the Chinese team who hit a flying missile target accurately by blowing it to pieces. The time window to hit such a target accurately is only about 4 seconds.

The venue offered the public a free WiFi connection. The audience also can interact with PLA commentators by sending their questions via social media.

Chinese soldiers take part in the International Army Games 2017 in Korla, Xinjiang Uygur autonomous region, Aug 1, 2017. [Photo by Zou Hong/China Daily]