It should be noted that jiacang is based on investors' losses. If investors are at a loss, then adding positions will reduce costs. If investors are in a profitable state, then adding positions will increase costs. This time is not cost-effective for investors. When making profits, investors should consider taking profits, not adding positions. If investors judge that the follow-up market is better and their positions are lighter, even if they are profitable, investors can increase their positions, but this requires investors to judge the market outlook more accurately.