Tī-an (治安) sī pó-hō͘ kò-jîn, châi-sán, bu̍t-phín bōe siū-tio̍h chai-hāi ia̍h-sī sū-kò͘ téng gûi-hiám ê ui-hia̍p. Tī bô-kāng ê siā-hōe chè-tō͘ hā, tùi tī-an ê jīn-ti kap phêng-kè āi ē bô siáⁿ sio-kāng.