Excuse me, what paper is this under the calligrapher's teacher? The bamboo curtain marks are obvious. Many great calligraphers have used it? How about the price?

From the picture analysis, this should be the "silk" commonly used in painting and calligraphy, not the rice paper commonly used. Plain weave is light, tough, crisp and flat, which is mostly used in fine print and meticulous brushwork. Generally, there are tianxiang silk, screen silk and so on. Tianxiang silk can be used for women's wear and children's wear. Its satin flowers are prone to fuzzing and should not be washed more.