The Riemann four-dimensional structure laid the foundation for Einstein's general theory of relativity, but the symmetry of the Riemann four-dimensional structure caused general relativity to lose the arrow of time, treating time as an almost directionless spatial dimension. The complex geometric model of the Riemann hypothesis is a four-dimensional structure that captures the patterns of prime numbers. In the dimensionality of 'everything is numbers,' prime numbers can express the physical space that real numbers represent. The difference between 'no center' and 'decentralization' lies in the dimensional disparity. 'No center' refers to a four-dimensional structure, while 'decentralization' refers to a three-dimensional structure. Take $BTC and $ETH as examples: $ETH is a three-dimensional structure, an executor of trust code that can be restored and reversed (validators with staking rights to produce blocks under PoS). $BTC is a four-dimensional structure, with an additional dimension compared to $ETH—the time dimension, an irreversible time dimension. This is because the majority of nonce calculations have already been integrated into the time dimension of our universe and cannot be repeated due to the irreversibility of time.