[AlanYx]

Mao had an awareness of what was going on. For example, like the Soviets during the Ukraine famine, Mao's government intentionally outlawed starvation being listed as a cause of death. He was also so utterly convinced of the correctness of his ideologically informed ideas about farming (e.g., he was under the spell of Lysenko's ideas about unproductively close spacing because crops of the same "class" would never compete with each other) that he would choose to blame failures on people's lack of purity for correctly following his ideas and on imagined conspiracies of deposed landlords.

However, what you're saying is also true; there are documented historical examples of local officials, terrified of Mao, setting up faked fields with scarce crops from the neighboring area being transplanted into a single field specifically to "impress" Mao during his visits and avoid his ire.