A cook adds chili oil to a bowl of beef noodles at a restaurant in Lanzhou city, capital of Northwest China's Gansu province,. Lanzhou is known for its beef noodles made into different shapes. Thousands of restaurants in the city are reported to sell more than one million bowls of beef noodles a day. In many other cities in China people can also easily find beef noodle restaurants. [Photo/Xinhua]