Why is the Buddha's belly so fat and his smile so wide? Too many Twinkies and six-packs of Old Milwaukee? Wrong again, pork bun breath! Actually, the "golden Buddha" statue in the lobby of the Chinese Cultural Center's Golden Buddha restaurant is Bu-Dai (Hotei in Japanese), the corpulent, smiling mendicant revered for his good humor and generosity. Chances are the Phoenix version has been packing on the pounds by eating dim sum to his heart's delight at his namesake, the new eatery at CCC, which serves dim sum daily from 11 a.m. to 3 p.m. See, dim sum actually means "heart's delight" in Cantonese, so that's a little pun on our part. But we don't kid when it comes to Golden Buddha's dim sum, an endless parade of small plates that include sweet shrimp-stuffed noodles, shark-fin dumplings, barbecued jellyfish, custard-filled pastries, coconut cake, and red-bean-stuffed sesame balls, to name a few. In fact, a few too many trips to Golden Buddha, and you may resemble, well, a golden Bu-Dai. But hey, at least you'll be smilin'.