The five elements of Mariko are earth. According to the principle that the five elements belong to soil and water, it is forbidden to use the five elements to name Yuanzi. The naming of the word "Yuan" is taboo to use words with the same vowel uán or the same tone, which makes it difficult to read and has no sense of rhythm. The word "Yuan" is forbidden to be named with the same word as the ancestors and elders. If there is the word "yuan" in the name of the ancestor, it is forbidden for the younger generation to use it. Note: the above content is feudal superstition, don't believe it.