Flight technicians fuel a Eurocopter EC120B helicopter prior to a demonstration flight for the media at an airfield adjacent to an 'aircraft supermarket' on the outskirts of Beijing yesterday. Selling gliders, helicopters and powered light aircraft for prices up to 50 million yuan (US$8 million), the joint-venture trading company run by Beijing International United Flight Club is the first of its kind in the city and hopes to open the market to public buyers, although it has sold aircraft to club members for over 20 years. However, low-altitude airpace in China is still tightly controlled and despite hopes of liberalization for private pilots, reports of secret or 'black' flights are not uncommon and are widely considered to be on the rise.