Nope, there's no karate in this film ... but there's also precious little kung fu. At two hours and 20 minutes, this retooled, preteen, outsourced-to-China remake is overstuffed with subplots that have precious little to do with marital arts. Just as well. Scrawny, whiny wuss Jaden Smith (son to sugar daddy Will Smith) is good at striking a pose, but can't throw a punch or a kick to save his life. It takes a lot of Hollywood trickery to make the final 15-minute fight look at all believable.140 minutes PG.