The Great Wall of shopping By Pepe Escobar SHANGHAI - "Adore the world. Be after it. Be in it." This boardwalk advertisement greets at least half a million passers-by every day on Nanjing Dong Lu, Shanghai's premier commercial thoroughfare, where almost 40 years ago hordes of vigilant Red Guards waved Mao Zedong's Little Red Book. It is promoting - what else - a new shopping mall. And Shanghainese are indeed more than adoring, "after" and "in" this (shopping) world. Still growing at a dizzying 12% a year - to the cries of "unsustainable" by rows of economists in bad suits...