May I ask what time is the bird's nest harvested manually? Has this show been around recently?

This project has been stopped recently because of the epidemic

Cultivating bird's nests in spring and autumn every year can guarantee the quality and will not affect the reproduction of swiftlets. Because the journey is time-consuming, it is usually officially mined at noon. There are no performances open to tourists now, so as to minimize the disturbance to the swallows.

The bird's nest is picked on the cliffs, and such performances will not be opened on the spot. Moreover, they are all closed protection now, and there are also measures to build protection after the bird's nest is harvested.