QYBC is a business-oriented public blockchain built on DAG technology. Targeting common issues in existing blockchains such as transaction congestion, high fees, and long confirmation times, QYBC aims to build a DAG commercial public chain that is "ultralight, ultrafast, and user-friendly." It supports massive concurrent transactions with faster confirmations, making the realization of an ecosystem possible. QYBC is dedicated to revolutionizing traditional finance and payment industry rules by directly connecting all parties involved in the financial supply chain through a decentralized structure, enabling one-click asset tokenization and enhancing liquidity for equity and assets. For merchant users, QYBC provides the QYPay commercial platform, which facilitates one-click integration into QYPay payments and cross-border payment solutions. For individual users, QYPay offers a DApp wallet, rapid transactions, and various other features tailored to cryptocurrency users.