纸张（zhǐzhāng）- Rice paper: A type of thin, absorbent paper commonly used for Chinese calligraphy and painting.
墨汁（mòzhī）- Ink: The liquid pigment used in traditional Chinese painting. It is usually made from grinding an ink stick on an inkstone with water.
笔触（bǐchù）- Brushstroke: Refers to the distinctive mark left by the movement of an ink brush on paper. Different brushstrokes can convey different textures, moods, and artistic styles.