xī han
rare
uncommon
rarity
to value as a rarity
to cherish
Taiwan pr. [xi1 han3]
Áo hàn
Aohan banner or Aokhan khoshuu in Chifeng 赤峰[Chi4 feng1], Inner Mongolia
Lǐ Áo
Li Ao (774-836), Tang dynasty scholar and writer, colleague of Han Yu 韓愈 in promoting classical writing 古文運動|古文运动