Recently, many top exchanges and blockchain project parties gathered to discuss best practices for decentralized finance (DeFi) security, the feasibility of Layer 2 scaling solutions, and how to balance innovation and compliance requirements in an increasingly stringent regulatory environment. Experts at the meeting unanimously agreed that the security of cross-chain bridges will become a key indicator of whether the ecosystem can continue to develop, and suggested that the industry accelerate the research and development of auditing tools and automated defense mechanisms to cope with the increasingly complex offense and defense of smart contracts.