We hope you are hungry, because we are hitting up the street food scene in Changsha, a megacity in central China, which is home to more people than London or New York City. This part of the country is famous for its unrelentingly spicy food, and we are sampling everything that is on offer. From red hot crayfish to chili chicken to deep-fried Chinese donuts and the infamous black "smelly tofu" (trust us, it tastes better than it sounds). So loosen those belts and tune in for this culinary adventure!