The advantage of the Ethereum network is that its consensus mechanism effectively guarantees the safety of player assets. But as the price of ETH climbs in 2021, the gas fee has escalated to a crazy level, which is not in line with the concept of Play-to-Earn. Second, the TPS (Transactions Per Second) of Ethereum 1.0 is around 15-17 transactions, while the TPS of ETH 2.0 using Rollup can reach 4,000~5,000 transactions, which is still inadequate to satisfy the demands of gamers.