There are many reasons why you cannot name Kun.
1. The meaning of "Kun" in the name means flying extremely high, extremely far, and striving for the top. It is the good expectation of parents for their children. However, among the five elements, water defeats fire, so people who belong to the five elements of fire should not use the word "Kun" in their names.
2. It is also taboo to name the word "Kun" with a word that has the same rhyme as ūn or the same tone as Yinping, as this will make it difficult to read and difficult to pronounce.
3. If one of the elders in the family already has the character "Kun", then the younger generation can no longer be named with the character "Kun" to avoid the taboo of respecting the elders.
In short, many factors need to be taken into consideration when choosing a name, including meaning, five elements, pronunciation, etc., which need to be carefully considered.