At the turning point of globalization entering the "splintered era," the U.S. tariff system against China is evolving from the "Section 301" to a multilayered stacking mechanism by 2025, completely disrupting the landscape of cross-border commerce and supply chains. At the same time, the Web3 ecosystem, represented by Blockchain and encryption technologies, is becoming a new battleground for companies and capital to seek resilience and opportunities amid turmoil. This article will conduct an in-depth analysis from four dimensions: macro policy, industrial chain reshaping, capital flow, and technological innovation, and will propose strategic recommendations for companies and investors.