A participant passes by a billboard at the 109th Canton Fair in Guangzhou, capital of south China's Guangdong province, April 19, 2011. The Canton Fair, opened last Friday, ended its first five-day session April 19 this year with transactions reaching $23 billion. The session also witnessed 107,000 overseas buyers, up 8.4 percent from the previous first session, but buyers from Middle Eastern countries declined sharply. [Photo / Xinhua]