Nearly a thousand people laugh heartily together for half an hour every morning in a park in Shenzhen．Guangzhou Daily took a closer look at those happy people． They are members of a group named Laughing Club, and when they get together, all they do is laugh． Zhang Lixin, the founder of the club and regarded as the ‘laugh leader’, told the paper that laughing does him a lot of good．He started after he read some advice in a book and tried giggling after quarrelling with his wife to relax． After laughing for a few days, Zhang found himself more outgoing and relaxed．Soon his