Where do you think that comes from? The modern CCP leverages market economies to build that wealth. That success is because Xi recognizes the power for capitalism and growth to create wealth. They then try to control that though and the recent disappearance of Jack Ma and the government block of that IPO is more what I'm talking about.
The cultural revolution, hundred flowers campaign, and current Uyghur genocide are some of the classic negative aspects of CCP control. Those aspects are more the standard fare communist policy.
The good that's there comes from their embrace of capitalism and market incentives. The bad comes from the standard communist one party control, it's also what eventually leads to problems.
I thought Deng's principles were the foundation for modern China's economic policy? Is this not true?
"After Chairman Mao Zedong's death in 1976, Deng gradually rose to power and led China through a series of far-reaching market-economy reforms, which earned him the reputation as the "Architect of Modern China"." [0]
Attributing reduction in poverty rates primarily to Xi doesn't make much sense given the historical trends. See the world bank info[1] for a sense of the long term decline(1990-2016).
You do know that 850M of those live in China, right?