Historian Walter Scheidel writes that the violence of the land reform campaign had a significant impact in reducing economic inequality. He gives as an example the 1940s campaigns in village of Zhangzhuangcun, made famous by William Hinton's book Fanshen. Although poor and middle peasants had already owned 70% of the land: In Zhangzhuangcun, in the more thoroughly reformed north of the country, most "landlords" and "rich peasants" had lost all their land and often their lives or had fled. All formerly landless workers had received land, which eliminated this category altogether. As a result, "middling peasants," who now accounted for 90 percent of the village population, owned 90.8 percent of the land, as close to perfect equality as one could possibly hope for.[2]

https://en.m.wikipedia.org/wiki/Land_Reform_Movement_(China)

My understanding was that the CCP land reforms began slowly even before they had secured victory over the KMT, with landlords sometimes being reinstated when the communists had to retreat. Also I am not at all sure that land redistribution was led by Mao. I'll be watching the comments here for more English histories of the Chinese revolution.