Short-term trading, in addition to observing the changes in open interest, trading volume, and fees to monitor the movements of market makers, actually watching the real-time naked candlestick charts is more direct. The more a single trader dominates the market, the easier it is to perceive these changes.

You can find a recently active altcoin and focus on the 1-minute chart for a day, especially during times of extreme volatility, to observe the frequency of price fluctuations. You can truly feel which price levels are being sold or accumulated by the main trader and which are being bought or sold by retail investors. Sometimes, you can even imagine the trader on the other end of the line pressing the buy and sell buttons against you. This feeling is hard to abstract into a phenomenon or characteristic, but I believe that traders who often watch real-time charts will have this market sense to some extent.