Yesterday's fluctuations in BTC probably disturbed many people, especially those with high leverage on large orders. There was a strong feeling that it would break through the range, but unexpectedly, it came back directly. Those who managed their positions well didn't panic as much, so contract position management is particularly important, including recognizing volume-price behavior. All price indices are reflected based on changes in supply and demand relationships. What indicates oversupply, and what indicates undersupply? We can only have a clear understanding in our minds to feel more secure.