My grandparents were sent to the countryside as punishment for being counter-revolutionaries in the late 1960's. My grandmother was from a wealthy family of landowners while my grandfather attended university as an KMT navy officer cadet. While both became party members in the 1950's, the Cultural Revolution was a crazy time. They spent 5 years in Sichuan's rural regions, until my grandfather was recalled to the South Sea Fleet in the 1973.
The whole 70 million figure is absolutely ridiculous. I watched that number grow more and more outlandish as I grow up. When I was a young teen, they were saying 20 million, then 35 million, now 70 million. These figures usually appear in FLG or right wing Western media, but admittedly they were effective in a smear job. While it's true that there were famine, the scale of death had been greatly exaggerated. In addition, the Chinese government's records were in shambles, and an accurate tally is difficult. Somehow these people knew the exact numbers, with no sources to back it up.
Mao was a disaster as an administrator and he was power hungry. The errors and evils of his ways are plain to see. There are plenty of criticism of him even inside CCP. There is no need for exaggeration and lies. If anything, I find these liars more repulsive than Mao himself, because of their motives usually involves the demise of China.