1. **First resistance:** 1790-1830 (short-term strongest trapped zone; the dense trading area at the June rebound high. As long as price pushes up here on decreasing volume and stalls, this is the optimal spot to go short in the short term)

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2. **Second resistance:** 1840-1860 (the 20-day moving average; the mid-term line dividing bulls and bears. If, on the 4-hour chart, price breaks up and holds above 1860 with volume, all bears stop and it turns into a pullback-to-go-long setup)
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3. **Third resistance:** 1920-1960 (the first target of the rebound; only after breaking through can we look toward 2100)
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4. **Ultimate resistance:** 2090-2110 (the mid-term reversal confirmation line; only a breakout here can open up mid-term upside room)

**Support levels** (from high to low, spot accumulation + short-term buy-the-dip zones)

1. **Weak support:** 1720-1740 (the intraday lower boundary of the range; minor support—if broken, it turns weak)
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2. **Strong support:** 1640-1680 (the dense chip accumulation zone that initiated this round of rebound; a pullback that does not break is the only safe short-term area to go long)
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3. **Bull-bear boundary support:** 1500-1530 (a monthly-level major bottom; the lowest point of this round of decline. If it breaks, the mid-term trend turns fully bearish—abandon the long idea)
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4. **Ultimate bottom-fishing zone:** 1270-1300 (only triggered if BTC breaks 60,000; this is an annual-scale heavy spot bottom-fishing position)

**Three, a complete strategy with three types of play** (spot long-term holding, futures short-term trading, spot swing bottom-fishing are separated and do not interfere with each other)

**Play 1:** Long-term spot accumulation (suitable for holding for 3-12 months; no liquidation risk; currently the best approach)

**Core logic:** The late stage of a mid-term bearish selloff; institutions keep accumulating. The more it falls, the more you buy—don’t go all-in at once. Build the position in 5 tranches: buy only. After price gets above 2100, reduce the position in tranches.

1. **Base position, 10%:** a small position at the current price range of 1680-1720