Quick Answer: What Is the Zhu Surname?
The Zhu surname (朱,zhū) has Mandarin’s first tone. Its character also denotes a bright red colour, but the word meaning and a family’s history are different questions.[1]
- Early account: A traditional compilation links one route to a former state.
- Imperial association: The Ming founder bore the surname 朱.
- Personal spellings: Actual institutional names show both Zhu and Chu for 朱.
Preserve the recorded character; a colour meaning or imperial association does not establish a family connection.

A short surname can be confused with a longer character, a former state name or another name pronounced with a different tone. The written form makes these distinctions visible.
The Character 朱: Reading and Colour Meaning
The Ministry of Education records the surname under zhū, alongside a separate bright-red colour sense. Another reading elsewhere in the dictionary entry belongs to a place-name expression, not the surname reading used here.[1]
The colour sense does not show that a particular family made pigments, wore red or inherited a colour-based title.
2019 mainland rank: 14th.[8]
The Ancient State of 邾 and Other Name Changes
Tongzhi (通志,tōngzhì), volume 26, connects one account with the former state of Zhu (邾,zhū). It describes descendants dropping the settlement component from 邾 and using 朱 after the state was lost.[2]
This is a historical name-formation account. It is not a modern instruction to replace 邾 wherever that character appears. The same entry also records northern compound family names changing to 朱, so it does not present only one route to the surname.[2]
Connecting a household with either account requires its own generational evidence. An ancient state’s name cannot supply missing links in a modern family tree.
The Ming Imperial Association
The Ministry of Education gives Zhu Yuanzhang (朱元璋,zhū yuánzhāng), the Ming founding emperor, as an example of the surname. His name confirms an imperial association; it does not establish royal descent for everyone surnamed Zhu.[1]
Zhu and Chu in Actual Personal Names
HKUST’s mathematics profile records Yong-Chang Zhu (朱永昌,zhū yǒngchāng). Its humanities profile records Birdy Chu (朱迅,zhū xùn). Both use 朱, while their Latin surname spellings differ.[3][4]
The Mandarin annotations explain the Chinese names. They do not replace either person’s established spelling or imply that the two individuals belong to the same family.
Why 朱, 硃 and 祝 Need Different Attention
The cinnabar character (硃,zhū) has a documented word-level relationship with 朱. The Ministry of Education’s variant dictionary also explicitly treats 朱 as a standard character in its own right and lists its surname use.[5][6]
That relationship does not justify automatically changing a surname written 朱 to 硃 when preparing a traditional-character version of a name.
Zhu written 祝 (祝,zhù) is a different surname with Mandarin’s fourth tone. Without tone marks, both names can appear as Zhu, but their written characters and readings differ.[7]
How to Compare Zhu Family Records
- Copy the full Chinese name and preserve its original Latin spelling.
- Compare relatives, dates, places and the document’s creator.
- Require records linking generations before choosing an ancient surname branch or a royal family connection.
FAQs About the Zhu Surname
Does the Zhu Surname Prove Ming Royal Descent?
No. The Ming founder’s surname is recorded, but any claimed relationship to his family requires separate evidence.[1]
Should the Surname 朱 Be Written 硃 in Traditional Chinese?
Do not make that change automatically. 朱 is independently recorded as a standard character with surname use; preserve the individual’s name.[5][6]
Are 朱 and 祝 the Same Surname?
No. They are separate dictionary surname entries: 朱 is zhū, with the first tone, and 祝 is zhù, with the fourth tone.[1][7]
Fuentes
[1] Ministry of Education. 朱: Revised Mandarin Chinese Dictionary
[2] Zheng Qiao. Tongzhi, volume 26: 邾 and 朱
[3] HKUST. Yong-Chang Zhu
[4] HKUST. Birdy Chu
[5] Ministry of Education. 朱: Dictionary of Chinese Character Variants
[6] Ministry of Education. 硃 and its recorded variant 朱
[7] Ministry of Education. 祝: Revised Mandarin Chinese Dictionary
[8] Ministry of Public Security, via reproduced report. 2019 National Name Report