书丹

書丹
shūdān

stone inscriptions (especially those written in red)

Wiktionary

Entry Composition

=1 书 Shū abbr. for 书经 Shūjīng
=1 书 shū
  1. book
  2. letter
  3. document
  4. to write

classifiers: 本, 冊, 部
2 丹 dān
  1. red
  2. pellet
  3. powder
  4. cinnabar