Maybe most people have never eaten bird's nest before, but that's okay. Even if they haven't eaten bird's nest, they have already heard about its nutritional value. Bird's nest gives the impression that other than its high nutritional value, the rest is an expensive word. Therefore some people feel confused that bird's nest is just the saliva of swallows, why it is so expensive.

In fact there is a misunderstanding in this perception. Swifts that can build nests are not the house swifts that we see in our daily life, but the Swift family's swiftlets. When house swallows build their nests, they mix soil and saliva together and build their nests under the eaves. The saliva of swallows has no nutritional value, so there is no need to eat it. The Golden Swallow is smaller and lighter than the Yanja and usually lives in India, the Malay Archipelago in first-class Southeast Asia, and elsewhere. Its largest aggregation is located in a large cliff cave on the Virginia coast.

According to incomplete statistics, the number of people within the territory of the Golden Swallow can reach two million. However this swallow usually nests in the spring. Because its beak secretes a colloidal saliva, it becomes translucent and slightly yellow when blown by the wind. It is the main component of the bird's nest. Using this saliva and seaweed, as well as the downy hairs on the swiftlet's body. Because swiftlet nests are usually built in caves where the terrain is relatively steep, harvesting is very dangerous, which is one of the reasons why bird's nests are so expensive. Later on, people will finish processing the bird's nests in a very complicated process, which is roughly divided into steaming, soaking, removing impurities, de-feathering and drying. After the whole process is completed, bird's nest is considered to be a real natural health product.

Of course bird's nest has high medicinal value. It can nourish yin and yang, strengthen the spleen and vital energy, and also strengthen the heart and lower blood pressure. It is suitable for people with high blood pressure. In addition bird's nest is especially suitable for people after illness. If you go to the hospital to visit your patients, carrying bird's nest is also a good choice. Therefore, every penny counts, bird's nest is too expensive, it will not be cheap.