More info about Lantern festival can be found here.
By the way, white dragon you can see in the middle is about 20 meters (apx 25 yards) long and has been crafted from thousands and thousands of china porcelain plates, spoons and egg bowls! Porcelain has been imported in huge wooden boxes directly from China, together with about 20 Chinese specialists. They were knitting it together for a few weeks. Amazing!!