By Master Wei Lin · Updated August 3, 2026
Chinese Metaphysics Scholar
What is the Chinese surname Xu?
Xu is the romanization of 2 distinct Chinese surnames, 徐 and 许, each with its own character, Kangxi strokes, and Wu Xing element. In the Five Grids the surname's strokes set the heaven grid (天格), so each Xu scores given names differently.
Xú (徐)
徐, 10 Kangxi strokes · Wood element (木)
In the Five Grids (三才五格) the surname sets the heaven grid (天格): for 徐 it is 11, Reviving Fortune (Very Auspicious). The heaven grid is shared by everyone who carries the surname, so the classical reading never judges it alone; it matters only as the top of the Three Talents (三才) sequence. What a naming reading actually weighs is the given name over these strokes.
Best-scoring names over 徐, by element
Live output from the ranker behind the Chinese Name Report: for each favourable element (用神) the chart could prescribe, the single best-scoring two-character given name over 徐, with its self grid (人格) read against the 81-number table. Your child's chart picks the row.
Xǔ (许)
许 (traditional 許), 11 Kangxi strokes · Wood element (木)
Also romanized: Hsu, Koh
In the Five Grids (三才五格) the surname sets the heaven grid (天格): for 许 it is 12, Lonely Household (Inauspicious). The heaven grid is shared by everyone who carries the surname, so the classical reading never judges it alone; it matters only as the top of the Three Talents (三才) sequence. What a naming reading actually weighs is the given name over these strokes.
Best-scoring names over 许, by element
Live output from the ranker behind the Chinese Name Report: for each favourable element (用神) the chart could prescribe, the single best-scoring two-character given name over 许, with its self grid (人格) read against the 81-number table. Your child's chart picks the row.
Frequently asked questions
What is the Chinese character for the surname Xu?
Xu romanizes 2 distinct Chinese surnames: 徐 (10 strokes) and 许 (11 strokes). They are different families with different characters, and the stroke systems score each one differently, so knowing your character matters more than the spelling.
What element is the surname Xu?
Each Xu surname carries its own element: 徐 is read as Wood, 许 is read as Wood. The surname's element is fixed and inherited; a naming reading balances the given name against the birth chart's favourable element (用神).
What does the heaven grid (天格) of Xu mean?
The heaven grid (天格 tiān gé) is computed from the surname's strokes and it is shared by everyone who carries the surname, so the classical reading never judges it on its own. It matters only as the top of the Three Talents (三才) sequence, where its element interacts with the self grid below it. A so-called unlucky heaven grid says nothing about a person.
Which given names score best with the surname Xu?
The best given names over 徐, 许 depend first on the child's or adult's own chart: the favourable element (用神) picks the character pool, and only then do the Five Grids rank candidates over the surname's strokes. The Chinese Name Report computes exactly that for a newborn, and the Chinese Name Analysis grades the name an adult already carries.
Explore More Tools
Chinese Surnames
All the surnames in our reviewed table, with strokes and elements.
Open →Chinese Names
The naming hub: the chart-first method and the five element pools.
Open →Chinese Name Report
Ten names ranked over your surname and your child's chart, $49.
Open →Chinese Name Analysis
The name an adult already carries, read against their own chart, $68.
Open →Free BaZi Calculator
Your Four Pillars and the element your chart leans toward.
Open →