BCH has now dropped to 640. Is this position a bottom? Can it rebound?

From a technical perspective, this price is indeed a key support level. Many are buying the dip here, while others are considering whether to continue falling or to rebound. It mainly depends on the overall market sentiment; if Bitcoin stabilizes, the probability of BCH turning around is still there.

However, to be honest, the current popularity is indeed average. Trading volume is not very active, and funds haven't really entered the market. To see a real breakout, we need a clear signal, such as Bitcoin hitting a new high or some positive news that can re-activate the market.

In this position, risk and opportunity coexist. The bold can try small amounts, while the more conservative can continue to observe. Whether the other side can reach this level ultimately depends on whether the market gives this opportunity.