Web3 has moved from concept to reality, with a global market size of $21.35 billion in 2025, and the scale of China's related industry exceeding $20 billion. Its core lies in user sovereignty, and power redistribution is realized through blockchain, smart contract, NFT and DID. The five major application scenarios include DeFi (TVL over $120 billion), NFT utility (e.g. Starbucks equity), DAO (over 5,000 active organizations), GameFi (over 3,100 games) and decentralized identity. The market is shifting from speculative to value-driven, with future opportunities focusing on the creator economy, digital identities and RWA asset tokenization, with the goal of rebuilding digital trust and equity.