On April 14, Vitalik Buterin wrote today that he supports privacy not only because it is a guarantee of personal freedom, but also the cornerstone of social order and technological progress. The article pointed out that decentralization and privacy are inseparable, and current AI and big data have greatly enhanced the risk of centralized control of personal information. Vitalik emphasized that cryptographic technologies such as ZK-SNARKs are being empowered to protect identity information and achieve secure data calculations. He called for strengthening the open source, versatility and trustworthiness of digital privacy tools to counter potential global data hegemony trends.