In Southeast Asia, investors built Swallow Houses for Jin Siyan to collectively inhabit, nest, lay eggs and hatch. Swallows can fly and leave their nests.
Every time Jin Siyan breeds the next generation, it will rebuild its nest. The nest built before can be picked by people, called the bird's nest.
Before the introduction of bird's nest industry, all bird's nests were picked by people climbing to caves and cliffs where they lived in the wild in Jin Siyan, which is what we often call "Dongyan". Because of the difficulty in picking and the exposure of bird's nest, it is easy to be polluted by the environment and hurt by natural enemies, so the quality is uneven and the output is unstable. Those fresh, white, complete and almost hairless swallows are only available to dignitaries, also known as official swallows or tribute swallows.
The development of Yanwu not only protected species in Jin Siyan, but also improved the quality of bird's nest. It also provides new jobs for many farmers in Southeast Asia, which is a good thing to kill three birds with one stone. If you want to know or pay attention to the prospect of Yanwu, you can consult CITIC Fu Ying Platform for more information.