The six-day China International Aviation and Aerospace Exhibition concluded in Zhuhai City, in south China's Guangdong Province on Sunday. Deals worth more than 21 billion US dollars were signed, with nearly 240 aircraft traded. A total of 770 firms from 43 countries and regions participated in the event, which attracted over 450,000 visitors from around the world. On the final day, there was a special flight performance by China's fifth-generation J-20 stealth fighters.