Today, gold reached 2638 during the retracement process and then rebounded again, but did not effectively fall below 2640. The gold correction did not fall below 50%, so there is still room for gold to rise again.
From the perspective of technical structure, gold has signs of building a head and shoulders bottom pattern at the short-term level. Once gold cannot effectively fall below 2640, it is still possible for gold to rise to the 2670-2680 area.
So in terms of short-term trading, if gold falls back to the 2645-2640 area, I will consider adding more money to be long gold.