越南语中的汉越音并非借自长安音，而是借自平话方言。其原因有如下几点：1.汉越音与长安音相差甚远；2.平话曾是广西很有影响的汉语方言；3.在广西的汉语方言中，只有平话方言的历史比较久远。4.平话方言与越南语的分布区域十分接近。5.现代平话方言中，不难找到与汉越音相同或相似的语音特征。 The Vietnamese and Vietnamese phonetic sounds are not borrowed from Changan dialect, but borrowed from the dialect of Ping dialect. The reasons are as follows: 1. Han Yueyin Chang’an sound far and far; 2. Ping dialect was once influential in Guangxi dialect; 3. In Guangxi dialect, only the history of Ping dialect is rather old . 4. Piping dialect and Vietnamese language distribution area is very close. In modern dialect, it is not hard to find the same or similar phonetic features as the Han dialect.