Zhou Yanling's 5.21 Pancake Operation Strategy: 1. Buy at 106000-106600, stop loss below 105000, target 107700-108500 2. Sell at 109000-108300, stop loss above 110000, target 106500-105500 Zhou Yanling's 5.21 Ethereum Operation Strategy: 1. Buy at 2470-2510, stop loss below 2430, target 2610-2650, continue to look for upward movement around 2720 2. Sell at 2720-2680, stop loss above 2760, target 2600-2560