shū / fǎ / lǎo / shī / ràng / xué / shēng / guān / chá / wǎ / yàn / de / cái / zhì / hé / wén / lǐ书法老师让学生观察瓦砚的材质和纹理。The calligraphy teacher asked the students to examine the tile inkstone's material and texture.