Obamas climb Great Wall after lunch of trout

US first lady Michelle Obama visited the Great Wall's Mutianyu section on Sunday and became a heroine, if an old Chinese saying is to be believed.

"You're no hero until you reach the Great Wall," said Li Lin, a souvenir vendor, repeating the saying.

"She looks more fabulous than on TV," Li said of Obama. "But it would be great if she would stop by my shop."