LOD (LeDu Chain) is the native digital asset based on blockchain technology within the Serial Clouds "Shared Reading" ecosystem. It represents a reading entitlement that is closely tied to the writing activities of authors and interactions with readers, and can only be obtained by readers making a certain contribution to a work. Within the Serial Cloud shared reading ecosystem, it will serve as the medium for contributions between authors and readers, incentivizing authors to create outstanding works and enabling readers to enjoy high-quality reading experiences.