Wu said that Vitalik Buterin stated that several major Ethereum Layer 2 networks have entered the first stage of security standards, and the next goal should be to achieve fast native withdrawals based on ZK proof systems, prioritized over advancing to the second stage. He suggested adopting a '2-of-3' hybrid proof system composed of ZK, OP, and TEE to balance security and speed, and pointed out that as ZK technology continues to mature and costs decrease, this path is becoming more feasible. The ultimate goal is to achieve almost instant asset transfers and settlements across Layer 2 on Layer 1 through aggregation technology under economically acceptable conditions.