Former premier Zhu Rongji, who has given millions in retirement, ranks among China's most philanthropic, but some wonder why he's alone in his field.

"Since Zhu Rongji stepped down as premier of China in 2003, he has pursued interests including playing a type of fiddle called the huqin, writing best sellers and practicing philanthropy. It is this last activity, in particular, that returned Mr. Zhu to the spotlight, while also drawing attention to how unusual such charity is among former Chinese politicians." -- Jess Macy Yu, the New York Times