It has been pointed out for more than a decade, yet Kung still brags about the paper in his bio. LOL
"Using the Great Leap Famine of 1959–1961 as the context and associated data, I cogently demonstrate just how political institutions and policies could powerfully shape the economic behavior of government bureaucrats (in much the same way that managers in private enterprises are incentivized). My work is path-breaking, as it challenges (for the first time) the traditional belief that political radicalism is largely the dictator’s choice."
This is more embarrassing than the authors not retracting even after fraud has been pointed out.