Much like the State Fair in the U.S., Temple Fair in China happens in winter during the Chinese New Year. It's been many years since I last went to one since every time I go back to China, it's summer/fall time. This year, I finally got the chance to go to two of the Temple Fairs. It was really fun. The more prestigous the Fair, the more people you will see. The first one I went, there were so many people that we literally were walking shoulder to shoulder and right next to one another's heals!
Pictures courtesy of http://bbs.cnhan.com/thread-16466390-1-1.html