Donald McIntyre, former business development manager for the ETC development team, said ETH is about scalability and performance, and ETC is about high value and security. ETH and ETC have different functions in the blockchain industrial stack. ETC will be a highly secure base chain, ideal for decentralized computing and high-value smart contracts between people, and ETH's goal is to be a high-speed, high-volume transaction layer for high-performance applications. In this case, ETC can even provide security services for high-performance networks such as ETH. When ETH finally turned to ETH 2.0, it was a proof of rights (PoS) system with database fragmentation in the form of fragmentation and variable monetary policy. ETC will be the only non-distributed, fixed monetary policy, proof of work (PoW) and Turing's complete blockchain. On the technical side, ETC as a platform did not face major challenges, because I saw the ECIP (Ethereum Classic Improvement Program) upgrade pipeline is progressing smoothly.