By delving into the white paper of XAI, you'll find that its approach to Data Availability is very pragmatic and clever. Traditional Rollups, for security reasons, not only post the state root on-chain but also compress and post all transaction data (Call Data), which accounts for 90% of L2 costs. XAI introduces a DAC (Data Availability Committee) mechanism, where under normal circumstances, data is only synchronized among committee members, with only data fingerprints posted on-chain. This means that XAI's gas fees can be 99% lower than Arbitrum One. For a game that requires frequent saving of equipment attributes and battle records, this cost structure optimization is revolutionary—it finally makes the operational costs of blockchain games lower than those of traditional cloud server databases.