In an article published in 1981, Jerry Norman reveals his finding of regular correspondences of "蛇紙徛寄" after comparing materials drawn from eight modern Min dialects. This finding led him to reconstruct a triph-thong *iai for proto-Min final system. Nevertheless, some scholars disagree on such reconstruction of *iai. In view of the divergence among scholars, it seems worthwhile to reexamine the subject more closely. This paper aims at such undertaking in a rigorous manner, by using more extensive material and through a reexamination of the final *iai reconstructed by Norman. The paper is organized into five sections: (1) introduction; (2) the reconstruction of *iai in proto-Min final; (3) on the middle *-i- of final *iai; (4) the development of the coda *-I of final *iai; (5) conclusion. In the end, the discussion confirms the validity of Norman's reconstruction of final *iai.