1. Color: Longbeiqing is cyan before firing, hence the name Longbeiqing. The fired crab shell is yellow and blue, which is similar to the shell of raw crab, so it is called crab shell green.

2. Material: Longbeiqing uses the high-temperature mud from No.4 Well in Huanglongshan, which is an excellent mud with excellent quality. The crab shell green is made of mud, which is weak in mud, strong in sand and very breathable.

Generally speaking, although Longbeiqing and Crab Shell Green are both clay materials of teapot, there are obvious differences in color and material.