How do you say “Ay caramba!” in Mandarin? More to the point, how do you say “Ka-ching!”? At 20th Century Fox Consumer Products, the answer to the latter is the Simpsons Store, which opened today in Beijing. It’s the first high-end outlet dedicated to all things Springfield, featuring more than 125 items to turn yuan. The place is a Simpsons buff’s Mecca, with an entrance through a Bart silhouette and a design that details the characters' features and layers the store area…