A Chinese Biographical Dictionary/Chang I-chih
72Chang I-chih 張易之 (T. 五郎). Died A.D. 705. Elder brother of Chang Ch'ang-tsung (q. v.) When the latter had gained the favour of the Empress Wu Hou, he told her Majesty that he had an elder brother who was much cleverer than himself and knew a great deal about the elixir of life. Accordingly Chang I-chih was sent for, and by his beauty and address at once won the heart of the Empress, who conferred upon him various high posts and finally ennobled him as Duke.