2. Pick a small part of the bird's nest first, put it in a white porcelain dish filled with water, carefully pick the hair with tweezers and toothpicks, pick the big hair, and then pick the fine hair; Because Mao Yan is easy to see and be singled out on the white porcelain plate.
3. After the fine hair is selected, add water to the white porcelain dish and gently shake it, and the fine hair will fall into the water; Then put the depilated bird's nest in a porcelain dish without water.
4, the best choice of hair, you can pour pure water into the bowl of bird's nest, gently rub it with your hands, and dump the fine hair floating on the clear water, so that the swallow hair is very clean.