Based on the reference achievement scholars before, combined with the actual survey results on Nom Tay documents currently stored in Institute of Sino-Nom Studies, conducted article comparing other cases face each other and are similar in structure between the written word: Nom of the Kinh and Tay ethnic group in Vietnam with the letter of the Zhuang ethnic blocks (Guangxi, China). This indicates that, basically 3 types of this writing there are a lot of similarities in terms of composition, the differences are very small and specific characteristics. This sector should be studied in depth and hopefully more will have interesting results in the future.

• Hoang Phuong Mai