Why is 3700 a crucial position to watch for a bearish trend?

At the 3700 level, it is a key turning point for bulls and bears!

If it breaks, it doesn't matter; we just need to make a small defense to identify the trend, and we can quickly switch from resistance to support, looking for a thousand-point breakthrough.

But if it doesn't break, after this round of resistance takes effect, it will continue to open a significant cyclical pullback, which means a pullback space of several hundred points.