Made for roughly the price of a single scene in a Hollywood blockbuster and filmed entirely in a southern Chinese dialect, the drama Dear You does not have the hallmarks of a box office hit.But the independent film has unexpectedly become a sensation in China, receiving stellar reviews and sparking a wave of tourism to the small corner of southern Guangdong province where it is largely set.Produced on a shoestring budget of just 10 million yuan (US$1.5 million), Dear You has already grossed...