If users use or purchase your products frequently, you can easily boost sales of other low-frequency products. Using "high frequency" to drive "low frequency" is an important criterion for designing business models. In the same industry, if your peers are making low-frequency products, you can compete with high-frequency products. Using "high frequency" to attack "low frequency" is also an important criterion for designing business models. This methodology is widely used, but unfortunately, many companies use low frequency to compete with high frequency, and the result is a very tragic loss.