I used to have some criticism of this gameplay, until yesterday when I spent the whole day watching various call-and-sell schemes, which changed my opinion. After careful comparison, I found that this method is actually the fairest for retail investors— as long as you are attentive enough and have good judgment, you have a chance to pick up chips at the bottom, and the profit ceiling is quite high. This is precisely an opportunity for those investors who truly put in the effort.