At that time Taiwan's postal service still used the "pony express" method of relay stations. The stamp was a mark made with a carved wooden chop by the post office.
當時台灣的郵遞，仍是早期的驛站方式，郵票則由當地郵局雕刻木章蓋銷於信件空白處或黏貼信件的白紙上。