Beliefs have the power to create and the power to destroy. Human beings have the awesome ability to take any experience of their lives and create a meaning that disempowers them or one that can literally save their lives.
It should be pointed out that some of the things done after the arrest of the Gang of Four were inconsistent with Chairman Mao's wishes, for instance, the construction of the Chairman Mao Memorial Hall. He had proposed in the fifties that we should all be cremated when we died and that only our ashes be kept, that no remains should be preserved and no tombs built.