According to official updates, SUN.io has announced a major upgrade to its smart routing system, officially introducing the Universal Router and Permit2 protocols. After the upgrade, users can complete optimal path exchanges across multiple liquidity pools, including SunSwap V1/V2/V3, Curve, PSM, and HTX-SUN, in a single transaction. Simultaneously, the one-time high-limit authorization and signature validity and limit mechanism of Permit2 significantly reduce the energy costs of repeated authorizations and improve security. The official Tron mainnet Permit2 and Universal Router contract addresses have been published; users are reminded to interact with the officially disclosed contract addresses to securely unlock a more efficient trading experience.