Nervos' DC today said at the "Nervos Online Meeting" that stratified capacity expansion is the best solution for Nervos to solve the problem of blockchain expansion. From an architectural point of view, layering or decomposing the overall functionality of a system and handing it over to different functional layers or functional components is a design pattern that is better than coupling all functions into a single unit. Just as Internet protocols are also layered, we say that TCP/IP is actually the name of two protocols. Layer 1 is responsible for verification and storage, ensuring security. Layer 2 is responsible for computing, which is the future direction of the blockchain.