Understand the essence of major public chains in one sentence: Ethereum $ETH: A global central bank with no governor, no headquarters, and no closing hours. Solana $SOL: A supercar that goes from 0 to 100 km/h in 2 seconds—insanely fast, but occasionally breaks down and loses power mid-ride. Tron $TRX: Brother Sun's private courier company—sending $USDT is super fast and cheap, but the entire courier company is just him. BNB Chain