Forbes China released a list of the 30 most developed cities for tourism in the Chinese mainland yesterday in Shanghai. The findings show that Beijing, Shanghai and Chongqing are the top three, with the capital taking the lead. Compared with last year's result, the list saw Beijing secure its first place, and Chongqing and Guangzhou swapped their places. It is the first time for Chongqing to be included in the top three. Shenzhen, Hangzhou, Tianjin and Suzhou remain at the…