This is a Chinese classical dancing wig and headwear.
It is made of black and green silk, with gold and silver decorations on it.
The wig has a long tail and is decorated with pearls.
The headwear is also made of silk and has a similar design to the wig.
Both items are very beautiful and have a rich cultural significance in China.
They are often used in traditional Chinese dance performances and are considered important symbols of Chinese culture.