1. The sponge of jadeite refers to the translucent and slightly transparent white mineral with patches, strips, filaments and ripples inside jadeite. It is an impurity in jade, which seriously affects the quality and beauty of jade.

2. The arrangement of crystal structure in jadeite leads to the formation of cotton willow in jadeite. This refers to the cotton willow caused by the different arrangement order and position of crystals in the internal structure of jadeite.

3. Broken cotton willow caused by impurities. This type of tamarind is in the internal crystal structure of jade, which may be because jade often contains foreign impurities, some of which are relatively large and some are relatively small. Sometimes they get together, sometimes they spread out. When they gather together, they will form massive cotton, such as dotted cotton with Mu Na characteristics.