Because its price has a great relationship with its own quality.

Bird's nest can resist aging and has the effect of beauty beauty; (This is also the reason why stars love to eat bird's nest beauty. From the perspective of cost performance, eating bird's nest is definitely more cost-effective than buying high-end cosmetics. ) bird's nest can replenish the brain and improve memory; (Many candidates choose to eat bird's nest when they are pregnant or pregnant before the college entrance examination, which is why) Bird's nest can resist virus, lower blood pressure and improve immunity; (High-end tonics can improve immunity) and so on.