Bitcoin: Key level at 70300 at midnight. The four-hour closing price is crucial and must not break below this level effectively. As long as the four-hour close remains above this point, it indicates that the four-hour rebound structure is still intact, and the market may continue to rise toward 71500. Once this resistance is effectively突破, a new upward trend will begin.

In terms of trading, consider going long near 70800 with a stop loss set at 70000. If the stop loss is triggered, it indicates that the short-term bullish structure has broken down, and long positions should be temporarily abandoned. Wait for a pullback to the 69000-68000 range before considering re-entering the market.