Tyson Mayr, the Chilli Hunter, touches down in Szechuan - a mecca for chilli lovers from across the world. Taking in the madness of Chengdu’s dedicated pepper markets, he samples the region’s famously potent hotpots, learns the secrets of the local ‘mala’ method of making spicy Sichuan cuisine, and hops into a frog-leg chilli challenge unlike any other.