• xhangtzu,
• vhangtzu,
• fhangtzu,
• dhangtzu,
• cgangtzu,
• cbangtzu,
• cnangtzu,
• cjangtzu,
• cuangtzu,
• cyangtzu,
• chzngtzu,
• chsngtzu,
• chwngtzu,
• changtsu,
• changhtzu,
• chagtzu,
• changuzu,
• Chiangtzu,
• Cheungtzu,
• Changtso

• changed,
• chuang-tzu.

The plural form of the word "changtzu" is "changtzu" because it is a proper noun that does not change in its plural form.

The singular form of the word "changtzu" is "changtzu".