If your surname is Evans, start by comparing 伊 Yī and 艾 Ài: 伊 keeps the opening character of the documented transcription 伊万斯, while 艾 offers a different character and tone near the opening of 埃文斯. I would start with 伊 if you want an easy written connection to your original surname. Neither choice reproduces the English sound exactly.

There is also a third character worth treating fairly: 埃, the first character of 埃文斯, really does appear in a Chinese-language surname register. Its place in that register deserves attention, even though a separate question about surname pronunciation remains.

Two Chinese spellings, two starting points

Evans is normally pronounced with first-syllable stress, approximately /ˈevənz/, as recorded by Langenscheidt. The first vowel is the one in English *bed*, rather than the vowel in *even*. Your own family pronunciation should take precedence.

Chinese sources use more than one spelling. Xinhua's published text pairs Evans with 伊万斯 Yīwànsī. The British Library’s Chinese text uses 埃文斯 Āiwénsī. These are attested transcriptions, not evidence that everyone named Evans uses the same Chinese name.

That gives you a useful first decision. If you already use one of those spellings, keep it as the reference. If you are choosing a one-character surname for the first time, you can compare the opening characters without pretending that the three-character transcription is already a native Chinese family name.

Why I would try Yi first

伊 Yī is explicitly recorded as a surname in the Ministry of Education's character dictionary. Taking it from 伊万斯 is a straightforward extraction: the character stays the same, and the remaining two characters disappear.

The spoken change is larger than the written one. Mandarin Yī has a high vowel, approximately “ee”, and a high, level first tone. It does not preserve the English /e/ or /ɛ/, the v, or the ending of Evans. Its advantage is the visible connection to an established Chinese transcription, rather than unusually close imitation of your English pronunciation.

伊 also occurs in literary Chinese as a pronoun. That use does not give every person with the surname a poetic personality, and it is not a translation of Evans. You can choose 伊 simply because the link is clear and you like it beside your given name.

A practical introduction is 我姓伊，伊万斯的伊。Wǒ xìng Yī, Yīwànsī de Yī. It means: “My surname is Yī, the first character of Yīwànsī.”

What Ai changes

艾 Ài is another documented surname, listed with that pronunciation in the Ministry of Education's dictionary. The character also names the mugwort plant. That is a character meaning you may like; it does not establish an herbal occupation for either your family or all Chinese families named 艾.

Compared with the beginning of 埃文斯 Āiwénsī, 艾 keeps the Mandarin syllable *ai* but replaces the character and changes the first tone to a falling fourth tone. It is therefore a near-sound substitution, not a character taken unchanged from that transcription. Compared directly with English Evans, the diphthong in Ài also differs from the short first vowel.

The choice is concrete: 伊 keeps an attested spelling unchanged; 艾 gives you the plant character and a falling tone, with a less direct written link. Try both in the same sentence and beside the same given name before deciding.

Does that mean Ai cannot be written 埃?

No. Taiwan's Ministry of the Interior lists 埃 in its 2018 national name statistics, Table 57. This establishes recorded surname use. It would be wrong to reject it merely because an ordinary dictionary entry does not list “surname”.

The character dictionary gives āi and the meaning “dust”. The statistical table supplies no pronunciation. Those two sources cannot, by themselves, establish how every registered family pronounces its surname.

For someone who already uses 埃文斯, retaining 埃 has the strongest written continuity with that spelling. Before recommending it as a fully checked surname-and-pronunciation pair, I would want surname-specific pronunciation evidence. I would not rule it out because of its everyday meaning: liking or disliking “dust” is a personal naming preference, not a verdict on the people who bear the surname.

What happens to the Welsh history?

The *Dictionary of American Family Names*, reproduced by FamilySearch, traces Evans through Evan and Welsh forms such as Efan and Ifan to Ieuan, related through Latin Johannes to John. It identifies the ending -s as a patronymic formation: a surname built from an ancestor's personal name.

That history explains why a literal Chinese surname translation is difficult. Evans does not provide a simple occupation, colour or landscape feature to translate. Choosing a Chinese ancestral figure merely because your surname is patronymic would not preserve anything distinctive about Evans.

The sound-based options are enough here. You can carry the Welsh history in your explanation while choosing a Chinese surname that functions on its own.

Make the final choice with your given name

Use your existing Chinese given name if you have one. For a neutral comparison, 安宁 Ānníng can serve as an illustrative given name:

  • **伊安宁 Yī Ānníng** has underlying tones 1–1–2.
  • **艾安宁 Ài Ānníng** has underlying tones 4–1–2.

These are editorial examples for comparing sound and writing, not personalised recommendations or translations of an English given name. In surname-first romanisation, keep a space after the surname so the division stays clear.

My starting choice is 伊 Yī for a visible link to 伊万斯. I would choose 艾 Ài if its character and falling tone genuinely suit the full name better. 埃 remains a legitimate surname character to investigate further if 埃文斯 is already your established Chinese spelling.