People visit the 11th China (Luohe) Food Fair in Luohe City, central China's Henan Province, May 16, 2013. The five-day food fair, with an exhibition area of 50,000 square meters and attracting more than 1,500 enterprises from 17 countries and regions, opened here on Thursday. (Xinhua/Li Bo)

People tastes food provided by manufacturers during the 11th China (Luohe) Food Fair in Luohe City, central China's Henan Province, May 16, 2013. The five-day food fair, with an exhibition area of 50,000 square meters and attracting more than 1,500 enterprises from 17 countries and regions, opened here on Thursday. (Xinhua/Li Bo)

People visit the 11th China (Luohe) Food Fair in Luohe City, central China's Henan Province, May 16, 2013. The five-day food fair, with an exhibition area of 50,000 square meters and attracting more than 1,500 enterprises from 17 countries and regions, opened here on Thursday. (Xinhua/Li Bo)

A boy tastes the drink provided by the manufacturer during the 11th China (Luohe) Food Fair in Luohe City, central China's Henan Province, May 16, 2013. The five-day food fair, with an exhibition area of 50,000 square meters and attracting more than 1,500 enterprises from 17 countries and regions, opened here on Thursday. (Xinhua/Li Bo)

Photo taken on May 16, 2013 shows tea on display during the 11th China (Luohe) Food Fair in Luohe City, central China's Henan Province. The five-day food fair, with an exhibition area of 50,000 square meters and attracting more than 1,500 enterprises from 17 countries and regions, opened here on Thursday. (Xinhua/Li Bo)

People visit the 11th China (Luohe) Food Fair in Luohe City, central China's Henan Province, May 16, 2013. The five-day food fair, with an exhibition area of 50,000 square meters and attracting more than 1,500 enterprises from 17 countries and regions, opened here on Thursday. (Xinhua/Li Bo)