The surprise in “The Forbidden Kingdom” isn’t the lack of a real surprise in terms of plot or characters. Any familiarity with the film’s component genres – Hollywood romances, Hong Kong Kung Fu, and so on – will make plain how this unabashed crowd-pleaser paints strictly by the numbers. Hence, the bullied kid will learn Kung Fu, exasperating teachers bewildered by his ineptness, and eventually turn the tables on the bullies. He will meet a pretty, and tough, girl (Liu). He will become, in short, a noble warrior steeped in the spirit of martial art virtues. No, the surprise doesn’t lie in the parts but in how the whole transcends its constituent clichés to become a fun-loving, thrill-seeking homage. It’s like inviting some good ol’ friends over for one heck of a popcorn-popping party.