On the evening of January 3, the third debate of SheKnows's final debate at the end of the year began. The theme of this debate was "2020, the year when the public chain supervision broke the game." Bai Liang, founder of Zero One Finance and executive vice president of the Digital Asset Research Institute, said that the regulation of blockchain is not only related to finance, but also involves other rights of participants. There may be two methods of public chain supervision, or a combination of the two: on-chain supervision and off-chain supervision. The community can decide whether to accept in-chain supervision. But there should be more uniform rules for off-chain supervision. In-chain supervision refers to the introduction of supervision nodes in community governance. The community can decide for itself whether to introduce regulatory nodes. Supervision can determine the rules and intensity of off-chain supervision depending on whether there is on-chain supervision. Regulation cannot be forced into the chain unless the community accepts and becomes part of community governance. But regulation can set rules outside the community. Communities need to face regulatory rules if they want to interact and transact outside the community.