I'd like to share a candlestick chart. The most widely used ones are W bottom and M top. The reason is that the probability of V-shaped errors is relatively high, while the frequency of U-shaped errors is very low.

Especially in relatively liquid targets such as Bitcoin, the probability of occurrence is even lower. On the contrary, old coins such as Polkadot, which do not have great liquidity, may appear more frequently.

The appearance of these patterns will exert greater support and resistance on the market.