Four major factors for identifying "bull returns":

1. Bull species: must be big bull coins, leading coins or dark horse coins.

2. Sufficient adjustment: after the first wave of the market, it is necessary to experience a sufficiently long adjustment time and amplitude.

3. Stabilization: after the adjustment, the price stabilizes and no longer falls, and the bottom continues to rise.

4. Shrinkage: when the adjustment is in place, the trading volume is significantly reduced, which means that the dealer's wash is over and retail investors have basically left the market.