Most of the time, altcoins have no profit-making effect. Occasionally, there may be one or two opportunities that go against the trend and explode, appearing like exponential opportunities with perfect charts. However, when it comes to actual trading, the chances are pitifully limited, and what can be eaten is even rarer. So, the core transactions should still be placed in Bitcoin and Ethereum, with stable odds and sufficient liquidity to have a real winning rate.