The 123rd session of China Import and Export Fair, widely known as the Canton Fair, has seen the number of buyers soared 5.3 percent year-on-year, which was 5-year record high.   The Canton Fair, largest and most important trade fair in China that was held in Guangzhou, South China's  Guangdong Province. As of Thursday, it recorded transaction volume of 189.2 billion yuan ($30.1 billion), up 3.1 percent year-on-year, according to a statement the fair sent to the Global Times on Sunday.