Meng Yan's "Ten Years of Reflection in the Blockchain Circle" The blockchain circle has long been entangled in such elementary issues as "to have currency or not to have currency", wasting a lot of time; no industry practices have been proposed to solve data privacy issues; the technical tools and ideas of the currency circle have been mechanically applied, resulting in serious "rejection reactions" when they are applied; the central bank's digital currency or compliant stable currency should be actively promoted on the chain, which is a key step in the implementation of blockchain applications; in the short and medium term, it is still based on finance,...