The Ketagalan living here knew how to forge iron and manufacture exquisite ceramics. Judging from the excavated coins, such as those from the Kaiyuan reign of the Tang dynasty as well as from the Song dynasty, they already had social intercourse with the Han Chinese on the mainland.
住在這裡的凱達格蘭人，已經懂得煉鐵、製作精緻的陶器，而從出土的唐代開元通寶、宋代通寶等錢幣來看，和中國大陸的漢人已經有所交流。