Tāi-su (代書) sī chi̍t khoán choan-bûn siū lâng úi-thok pān hêng-chèng ia̍h hoat-lu̍t chhiú-sio̍k, koh ū chhù-lí siong-koan ê bûn-su sū-bū ê khang-khòe kap sū-gia̍p.

Tī Tâi-oân, kin-á-ji̍t só͘ kóng ê tāi-sú chú-iàu sī chí choan-bûn teh chhù-lí put-tōng-sán sū-bū ê choan-gia̍p-chiá, ia̍h chio̍h sī tong-tē hoat-lu̍t siōng ê tē-chèng-sū (地政士). Lēng-gōa chhan-chhiūⁿ chhù-lí kong-si teng-kì téng khoán chhiú-sio̍k ê lâng mā ū khó-lêng hong kiò chò tāi-su.