Although it has been traditionally accepted that quebi 缺筆, one of the name taboo (bihui 避諱) methods, appeared in Tang Gaozong’s reign (649 – 683), a number of unexamined examples attest that quebi may have appeared in Tang Taizong’s reign (626 – 649). This advancement enhances the usage of bihui to conduct research and urges us to rethink the 7th-century development of bihui.