As a researcher who has been focusing on the development of quantum computing for a long time, I highly value the "upgradability" of blockchain architecture. Most current public chains use elliptic curve cryptography algorithms, which may pose a risk of brute-force attacks by future quantum computers. XAI, based on Arbitrum's modular Layer 3 architecture, is much more flexible in the face of underlying cryptographic upgrades compared to bulky Layer 1 public chains. It can quickly integrate post-quantum signature algorithms through soft forks. Investing in XAI is not only a way to participate in the current gaming craze but also an insurance for the security of assets in the future era of explosive computing power.