The trials of being an adolescent are explored in “Chang Can Dunk,” which examines one teen’s battle to understand popularity and physical might after years of being viewed as a lesser individual. It’s the feature-length directorial debut for Jingyi Shao (who also scripts), who focuses on the business of being a kid in today’s world of social media clout and online harassment, juggling such pressure with a study of domestic woe featuring a distant mother and her wounded son. There’s a lot to “Chang Can Dunk,” more than the picture initially reveals, and Shao has the challenge of balancing the spirited ways of a sports film and the heartfelt moves of a family movie. Pacing takes a beating in the endeavor as two different plots compete over the run time, but Shao has something special with the cast, as charm and confidence jumps off the screen, keeping the viewing experience inviting as the story hits occasional turbulence. Read the rest at Blu-ray.com