Colorful stick is a new type of painting supplies, also known as water-soluble colorful stick or silky crayon. Different from traditional crayons, it uses water-soluble pigments, and can adjust the color depth and gradient effect by adding water. Color stripes are soft and easy to smear, and it is easy to create colorful effects on paper. It has high color saturation and transparency, which makes the work present more vivid and bright colors. Color bars also have good controllability and can be used to draw details and fill large areas. Because it is easy to carry and use, color sticks are widely used in painting education, children's painting and artistic creation.