1. Lang's five elements are fire. According to the principle that the five elements belong to fire and gold, the name of Lang is taboo to be named after the five elements belong to gold.
2. Lang's name is forbidden to be named by words with the same vowel sound m: ng or the same tone, which will be awkward to read and have no sense of rhythm.
3. The name of Lang is taboo to share the same surname with ancestors. If the ancestors' names have lang characters, the descendants are forbidden to use lang characters to name them.
Names should be combined with personal preferences, pay attention to homophonic meaning, and avoid strange names.