The future of cryptocurrency trading is on the chain! Binance Alpha 2.0 and MEXC DEX+were launched on the same day, both aimed at blurring the boundary between centralized exchanges (CEX) and decentralized exchanges (DEX), enabling users to trade on chain assets in a more convenient way. Centralized exchanges (CEX) were once the backbone of the early cryptocurrency industry, driving market adoption with user-friendly interfaces and high liquidity. However, its custody risks, regulatory pressures, and transparency issues have exposed the limitations of the centralized model, which runs counter to the decentralized spirit of blockchain. With the maturity of on chain infrastructure, on chain asset issuance platforms, decentralized exchanges (DEX), trading BOT, etc. are rapidly emerging, leading transactions back to the chain. DEX attracts users back to the on chain ecosystem through its non custodial, open, and high-yield potential. The DeFi protocol, Layer 2 solutions, and advancements in cross chain bridges have significantly improved the transaction speed and cost advantages of DEX. Users can self manage their assets, participate in new projects in real-time, and capture high returns in the meme coin craze. Compared to CEX, DEX's censorship resistance and global accessibility are more attractive. Although DEX still faces challenges such as on chain operational complexity, security vulnerabilities, and regulatory uncertainty. But with the popularity of Layer 2, cross chain interoperability, and user experience optimization, DEX's dominant position will be further consolidated. The community's belief in decentralization and wavering trust in CEX are also driving a cultural craze for on chain transactions. On chain transactions are not only technological advancements, but also a return to the original intention of blockchain. The rise of DEX marks a reshaping of financial sovereignty, with users shifting from passive consumers to active creators. Despite the remaining challenges, the future of on chain transactions is clearly visible, leading the cryptocurrency industry towards a decentralized sea of stars.