Long ago, red deer made a series of bird-themed designs, and many great ideas were not realized. Aromatherapy, as an olfactory product, also has the function of ornaments. It is also an attempt of our aromatherapy series to "enlarge" the tangible ornaments and "hide" the invisible aromatherapy. The bird is a shrinking weather bottle. The crystals in the bottle will change according to changes in temperature and humidity, like bird feathers.