1. The pharyngeal band is an integral part of the pharyngeal cup. Pharyngeal strips, pharyngeal horns, pharyngeal filaments and a small amount of impurities together form a pharyngeal cup. This can also be proved from another aspect, that is, in the process of stewing swallow cups, the soaked swallow cups should be torn one by one, which is the torn swallow strips.

2. The complete bird's nest is called the swallow cup. The swallow cup that was broken during transportation or plucking has become a swallow strip. As far as nutritional value is concerned, there is no difference between Yan Yan and Yan tiao.

3. A complete swallow cup means perfection. If you give someone a bird's nest, the meaning of giving a bird's nest cup and a bird's nest stick is completely different, and giving a bird's nest cup is more elegant. The bird's nest just picked from the bird's nest belongs to Mao Yan, which can be divided into light Mao Yan and heavy Mao Yan. Mao Yan needs to be picked by hand to go on the market, and as much hair as possible can be picked clean.