Tonight’s Chinatown Dining Tour features more than 20 restaurants and bakeries (see the map here), including luminaries like Lao Sze Chuan, Lao Shanghai, Double Li, and “Little” Three Happiness. The tour check-in is at New Three Happiness, 2130 S. Wentworth, second floor, starting at 5:30 PM; food is served on a first-come basis so it pays to be prompt. Register here before 2:30 PM today and it’s $20; admission at the door is $25.