Concubine's rally to the 2400 resistance level faces resistance and encounters obstacles, with the daily chart showing seven consecutive days of rebound. Today’s key is whether it can increase volume to break through and move higher.

If it cannot break through 2400 for a long time, the subsequent upward momentum will gradually weaken, so be alert to the risk of a quick pullback from high levels.
Intra-day pullback key support is at 2350—2315, and short-term long positions should patiently wait for a dip to around 2315 before selectively entering positions.
As long as the 2350 support holds and is not broken, the small-term bullish structure remains intact, and the rebound target is still at the 2400 level.
Once a strong breakout above 2400 occurs, the next resistance is at 2420—2460, and short positions should patiently wait for a rally to the 2450 zone before gradually considering entry.