Kau-?aⁿ-so? ( Eng-gi : exchange ) s? ?-cho?-chit e chh?-tiuⁿ, choan-bun t? cheng-koan , siong-phin , g?a-kok-gin kau-?aⁿ , ki-hoe , kap option e be-b?.

Pun bun-chiuⁿ s? chi?t phiⁿ phi-a-kiaⁿ . Li thang tau khok-chhiong lai pang-ch?? Wikipedia. hian l?n pian