Yang Jian/Shanghai Daily news

Yangtze River Delta Region cities will invite World Expo participants to visit their cities for free during the 2010 Shanghai World Expo.

The 15 cities of the region, all in Shanghai's neighboring Jiangsu and Zhejiang provinces, will invite Expo participants to take part in local festivals, or watch art performances and sports for one or two days during the Expo, said Zhou Xianxing, director of the National Participation Department of the Bureau of Shanghai World Expo Coordination yesterday.