Following the flash crash on October 10th, the bear market has continued, currently exhibiting extremely strong negative momentum. However, we recently witnessed the failure of the buyers' first attempt to establish a structural shift. Historically, momentum readings of +0.5 and -0.5 are key levels for determining structural shifts. In mid-January, the market attempted to trigger a bullish structural shift, but sellers successfully held their ground, maintaining the bearish structure and once again falling into a state of extreme negative momentum. Momentum performance at these inflection points is crucial for judging whether a strong structural shift will occur in the medium to long term.