The market of $BTC will never always be clear skies, nor will it be forever trapped in darkness. The ups and downs are just its normal breathing. Instead of hastily drawing conclusions based on temporary gains and losses, it is better to learn to stabilize oneself amidst fluctuations: when it rises, don't get carried away, and be aware of the risks behind the excitement; when it falls, don't panic, and pay attention to the opportunities in the troughs.