Michelle Obama's tour of China begins today, during which she will share the limelight with the country's First Lady, Peng Liyuan. Cathy Newman isn't sure who will say less...She’s one of the world’s most glamorous First Ladies, a star in her own right, and a supportive, caring wife to a super-powerful president. Move over Michelle Obama: China’s First Lady Peng Liyuan is now so famous in her own right, the American president’s wife will find herself having to share the spotlight when the two get together today. During Obama’s visit to China, she’ll no doubt find president Xi Jinping’s wife...