The bird's nest in Malaysia is the best. It is better to choose bird's nest than to distinguish it. The color is really natural, and there are no impurities such as sediment and moss. Bai Yan is ivory; All kinds of bird's nest will become bigger after being soaked in clear water, the color will fade, and the thread will be crystal clear and transparent, while the clear water soaked in bird's nest should be colorless and transparent.