I don’t think eating bird’s nest is useful at all. I can only say that the effect is minimal. To a greater extent, it depends on its psychological effect. It is the psychological hint you give him that makes you think eating bird’s nest is useful. However, there is actually no scientific evidence that eating bird's nest is nutritious and helpful to health. So I don’t think eating bird’s nests is useful, and bird’s nests are valuable and not something ordinary people can eat regularly.