Which Vietnamese word retains its meaning even after adding an accent mark?

It sounds easy, but thousands of people who read it have to think for a long time and still can't figure out the answer.

The riddle is as follows: " Which Vietnamese word can have the accent mark added without changing its meaning?" It sounds easy at first, but the more you think about it, the more something seems "wrong." Some people pondered for five minutes without figuring it out, while others, upon reading the answer, exclaimed, "Oh my god, I didn't think of that!"

Netizens are currently competing to leave their answers, but not everyone agrees. Try to guess if you belong to the "infinite IQ" group.

Which Vietnamese word retains its meaning even after adding an accent mark? (Illustrative image)

If you've figured out the answer, don't forget to leave your reply in the comments! The Q&A section will continue to bring you many interesting challenges to help you practice your thinking and reasoning skills every day.

KHANH SON

Source: https://vtcnews.vn/tu-tieng-viet-nao-them-dau-sac-nghia-van-khong-doi-ar1018909.html