Wu said that he learned that Ethereum founder Vitalik Buterin published an article to explore the possible future development direction of the Ethereum protocol, with a particular focus on the improvement of the Proof of Stake (PoS) mechanism. He proposed two key goals: achieving single-slot finality (that is, blocks are confirmed in one slot) and democratizing staking (lowering the staking threshold to 1 ETH). To this end, he proposed three possible solutions: improving the signature aggregation protocol, introducing the Orbit committee mechanism, and implementing a two-tier staking system. These improvements are designed to improve network efficiency and attract more independent validators, while balancing the decentralization and security of the system.