Ether's lowest spike yesterday reached around 4000, where there is often strong buying support at round numbers, triggering a rebound here is quite normal.

In terms of the strength of the rebound, the current upward momentum is clearly insufficient, failing to break through key resistance levels. For subsequent short-term operations, it is recommended to focus on short positions.

Short around 4250, defend at 4300, and look down to 4050.