Mobius credit protocol is based on the Rio public chain, which is a smart contract based on topology and topological token Low circulation digital assets provide a balance closed-loop circulation network infrastructure protocol. Rio defi is one Blockchain technology companies. The mission is to accelerate digital assets by connecting traditional and decentralized finance It is widely used. We develop solutions that integrate businesses, financial institutions and banks with distributed ledgers The system is connected. The core technology is the next generation blockchain infrastructure, called Rio chain. The application built on the Rio chain can reduce transaction costs, accelerate the confirmation speed, improve efficiency and cover the world.