The operation is actually not complicated; you can just use the default parameter 14 for the RSI indicator. When it enters the oversold zone, gradually buy spot assets, and with good position management, you are likely to make a profit.

During the decline, you can seize rebound opportunities midway, and at the end, aim for reversal opportunities; during the rise, catch the points of market continuation.

As for how to distinguish whether a decline is in the middle or at the end, just refer to the tutorial I pinned at the top.

The secondary market is different from the primary market; assets will not easily go to zero. If they drop significantly, they will eventually rebound.

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