A vertical Chinese invitation needs a deliberate treatment for numerals and Latin names. Rotating the whole text box does not necessarily produce a correct vertical reading order. Decide whether a short number belongs inside the vertical line or whether practical details should move to a small horizontal block. Adobe explains Asian text formatting in Illustrator help, while its language and OpenType documentation describes font features that an application may expose.
Separate decoration from information
Write down the fields readers must retrieve: the couple's names, date, arrival time, venue and contact method. Keep that list outside the design so a decorative change cannot silently alter it. Select the existing date text. Confirm whether the application uses real vertical text or simply rotates a horizontal object.
A rotated horizontal line can be suitable as decoration, but readers may have to turn the phone to read it. That is a poor default for an arrival time. Real vertical text can still handle European numerals and punctuation differently depending on the font and application. Inspect the exported characters instead of assuming that the vertical tool fixes every mixed-script run.
Pick one treatment for each field
For a short numeral group, inspect whether the editor supports a horizontal-in-vertical treatment, sometimes called tate-chu-yoko. Preview the actual digits and their spacing; a control that works for two digits may not make a four-digit year legible in a narrow column. For a longer Latin name, keep the name as a horizontal line beside the vertical Chinese title when that is clearer. Do not split a person's spelling into isolated letters simply to fill the column.
As a hypothetical example, an invitation might use a vertical Chinese greeting and a separate horizontal line reading “2026 · 10 · 13”. The date is an assumed design example, not a real event announcement. A bilingual name can appear in another horizontal line below. This arrangement reduces the burden on a reader who only wants to confirm when to arrive.
Test reading order, not just appearance
Export a draft and show it on the phone or printed card size that guests will use. Ask a person unfamiliar with the design to read the date and names aloud and point to the venue. If they reverse the date order or hesitate over the letters, change the treatment before polishing the background.
Compare every field with the approved information list. Inspect dots, slashes, brackets and the numeral zero at high magnification, then return to normal size. Font support, application composition and actual readability are separate checks.
Save the editable text master with the chosen font information. If a background is created through Imagild skills, add final event details in a text editor afterward. A successful result is one that guests can read correctly without instructions; a beautifully aligned but ambiguous date has not passed delivery review.