2Z has been continuously short since the opening, the third round of short positions in the live broadcast room is 0.528→0.366 with a holding period of one week. Short-term trades emphasize quick entry and exit, while medium-term trades emphasize stability, accuracy, and decisiveness. The mainstream focuses on making fluctuations. The short position at 4748 is hanging well, but it has been swayed by the rhythm, and pre-market careful consideration is better than impromptu decisions during the market.