It would be tough for any country to lose 7-0 in a World Cup qualifier, but when the losing team is China, and the thrashing is at the hands of arch-rival Japan, it is deeply humiliating. The defeat was “shameful,” according to an editorial last week in the Global Times, a state-controlled tabloid, while the Shanghai-based Oriental Sports Daily called it “disastrous,” adding: “When the taste of bitterness reaches its extreme, all that is left is…