We often say that "engineering thinking" is essential. An excellent system must have high scalability and backward compatibility. XAI, based on Arbitrum Nitro's modular design, perfectly embodies this. Its execution layer, data availability layer, and settlement layer are decoupled from each other. This means that if, in the next few years, zero-knowledge proof (ZKP) technology makes a significant breakthrough, XAI can seamlessly upgrade its underlying verification logic to ZK-driven without needing to rebuild from scratch. When you invest in XAI, you're not just buying a static codebase; you're acquiring an organic living entity with unlimited evolution potential, capable of always staying at the forefront of technology.