“While every American industry that comes here faces its own obstacles, the bar that exporters of children’s television programming must vault is particularly high: a traditional culture of respect for parents and authority reinforced by decades of Communist discipline and the ruthless competitiveness of an educational system that favors rigor over imagination. Still, Viacom, which dominates youth-oriented programming in the United States and other parts of the world with its MTV and Nickelodeon networks, is aggressively courting Chinese youngsters, hoping to introduce them to its brand of playfully antiauthoritarian programming.”