# 3.1 设计理念

XUnit 的设计基于以下三大理念：

1. 最小确权单元（Minimum Proof Unit, MPU）\
   \
   ৹  将现实资产的产权、收益权或使用权切分为最小化、可验证的 NFT 对象；\
   \
   ৹  每个 MPU 既可独立确权，又可作为可分割、可组合的资产原语进入 DeFi。\ <br>
2. 通用资产包装层（Universal Asset Wrapper, UAW）\
   \
   ৹  NFT 被定义为现实资产与链上世界之间的标准化接口；\
   \
   ৹  无论是房产、碳配额还是票据，均可通过 UAW 映射为同一类型的链上对象，降低跨资产类别的复杂性。\ <br>
3. 协议分层架构\
   \
   ৹  XUnit 将整体设计划分为 Proof Layer → Liquidity Layer → Incentive Layer → Governance Layer 四个层次，每个层次既相互独立，又具备可组合性。


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