Any coins that perform particularly well during a market downturn are likely to be dumped when the overall market rises; this is a common tactic used by some market manipulators.

There are also some coins like gas, fun, fartcoin, alch, aergo, alpaca, voxel that have been manipulating the market during bear phases, as well as some coins that have risen in advance for a period of time recently; during a market uptrend, it's very difficult for 90% of them to continue rising, so consider shorting them at highs, as there are often unexpected outcomes.

Bear markets attract funds, while bull markets harvest against the trend.

The second type of coin is the kind that moves sideways along the annual line, which follows down but not up, and the time cost is too high.

The third type of coin is new coins, which are mass-produced on Binance ALPHA.