Photo taken on Sept 9 shows the helicopter WZ-10 (nick name Fierce Thunderbolt), which is newly developed and researched in China, on display at the International Helicopter Exposition in Tianjin, China. The Tianjin International Helicopter Exposition kicked off in Tianjin on Wednesday. A total of 366 companies from around 20 countries and regions will take part in the event. As many as 56 helicopters will be on display during the exposition. [Photo/Chinanews.com]