In memory of Lu Wubing Sun set up a tombstone with the epitaph: "tomb of Lu Wubing, my ghost wife."

公子为纪念吕无病，专为她立了一块石碑，上刻：鬼妻吕无病之墓。

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Sun and co-authors Lu Zheng of UC Irvine and Ashley Wang of the Federal Reserve studied the returns of some 5, 000 hedge funds from 1994 to 2011, adjusting for the funds' stock and bond exposure, currency bets, credit spreads and other factors that could account for performance.

WSJ: Upside: Protecting Your Portfolio From a Downturn