1. The names of ancestors and sages are taboo. The Han people generally avoid naming their ancestors.
2. Taboo words that are raw or cold. Names are for communication, otherwise the name will lose its value.
3. The word "tongue twisting" is taboo. Tongue twisters mainly refer to double-tone words, overlapping rhyming words and homonym words.
4. Taboo indecent homophones. Indecent homophones will damage the beauty of the name and bring unnecessary trouble and annoyance to individuals.