Koān (Bián-tiān-gí: ခရိုင်) sī Bián-tiān ê tē-jī kip hêng-chèng-khu. In pian-chè-siōng tī chiu kap tē-khu ê ē-kha. Kàu 2015 nî 12 goe̍h, Bián-tiān ū 76 ê koān. Koān ē-té chiah koh pun chò hiong.