Mr Hu argued that without turning its back on the traumatic Cultural Revolution (1966 to 1976), the CCP could not embrace reform and open the door to usher in a period of prosperity.
"If one should not negate the first 30 years, does it mean that we still have to uphold the Cultural Revolution, uphold Mao Zedong's purges of senior cadres, including his remark that Mr Xi's father, Xi Zhongxun, was a counter-revolutionary who used novels as a weapon to conduct anti-CCP activities?"
This last question put the Chinese President in an extremely awkward position.
Mr Hu decided recently to release the transcript of his speech on the Web.
Mr Chen Ziming, a dissident branded as the black hand behind the 1989 Tiananmen incident, speculated that the recent salvos of propaganda attacking constitutionalism might have prompted Mr Hu to take Mr Xi to task.
Mr Hu's open criticism of Mr Xi also suggests that the princeling community is sharply divided over how to preserve the ruling status of the CCP, especially over whether rampant corruption and widespread unrest can be dealt with without political reform.
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