1, material: Baiyun Brush is mainly made of wool, which is relatively soft and slightly lacking in elasticity, making it difficult for some people to grasp the stroke direction and strength when writing, thus generating negative comments on Baiyun Brush.
2. Applicable scene: Baiyun brush is suitable for artistic creation such as calligraphy and painting, but in practical application, different people have different preferences and needs. Some people may think that the characteristics of Baiyun brush are not suitable for their own writing, so they don't have a high evaluation.