For a long time, the Shihsanhang (SSH) in northern Taiwan was the only archaeological site that had yielded a large amount of iron slag and the remnants of ironworking. Hence, SSH is considered the primary ironworking center in ancient Taiwan, and its date of 1800 BP marked the beginning of the Metal/Iron period. However, recent excavations at Blihun Hanben (BHB) in eastern Taiwan have produced a tremendous amount of ferrous pyrotechnological remains, including iron objects, furnaces/hearths, furnace lining, and slag. The recovered ironworking remains are no less than those at SSH, now making BHB one of the two ironworking centers in archaeological Taiwan. Dating demonstrated that the ironworking activities at BHB started around 1600BP, reached its apex immediately and lasted until roughly 1200BP, and ended around 1000BP. Macro- and micro-morphological analyses of the slags indicate that primary (and presumably secondary) smithing activities mainly took place at this site, and the smelting technology is consistent with the bloomery method. The smelting activities probably occurred adjacent to the BHB settlement, avoiding pollution and reducing the threat of fire. While the ancient iron technology of BHB is deciphered, many more questions are worth exploring. For example, there is no iron mining close by, meaning that the iron source remains unclear. Geochemical analysis shows a clear titanium signal in most BHB iron slag. Most Iron ore with titanium concentrates in northern Taiwan over 100 km away – how the craftspeople of BHB procured iron ore from such a distance remains puzzling.