Ethereum's recent trend shows a clear dual-directional characteristic. In the January 17th market, the key resistance level is around 3236 (set a 1% stop loss). If broken, consider seeking a re-entry opportunity at 3203 (set a 2% stop loss), with support locked in at 3179. During the downward movement on January 16th, the resistance level is at 3349 (1% stop loss), with further correction points set at 3383 (2% stop loss), and the bottom line at 3407. The spread between these points is controlled within 4 basis points, making it convenient for trailing stop settings.