Nice Chain (Ultimate Chain) is a secure, blockchain-based, distributed, decentralized Internet of Things (IoT) lightweight operating system. After thorough consideration of the characteristics of IoT technology and the needs of commercial ecosystem development, NEC optimizes existing blockchain technologies in areas such as digital asset issuance, cryptographic algorithms, smart contracts, market-oriented consensus incentives, decentralized DApps (Distributed Applications), and rapid access for new businesses. This enables seamless integration between the blockchain foundation and the IoT application ecosystem, ensuring the healthy, rapid, and sustainable development of the NEC business ecosystem. It achieves symbiosis among tokens, chains, and industrial IoT, creating a blockchain ecosystem for credible IoT digital assets. It efficiently facilitates the circulation and value transformation of credit digital assets, setting a global benchmark for the fusion of IoT and blockchain ecosystems.