Ao dai is the traditional costume of the Vietnamese people, while the cheongsam is the costume of the Chinese people. Lately, many Ao Dai innovators on our side make it more and more like cheongsam, and China is no exception. Someone even imported cheongsam to sell and post it as "Vietnamese traditional Ao Dai." What do you guys think about this issue? Should there be a regulation or rule about the characteristics of Ao Dai to help people distinguish and force designers to stick to it to innovate? How do we make it blend and not dissolve?

While the cheongsam shirt tends to change the slit flat, the length of the flap, the decoration emphasizes the hem, the neckline, etc., the Ao Dai focuses on stylizing the flat, preserving the line of the flap, the slit part flap, long flap, permanently fixed to the hip and knee-length.

It is not easy to tell in a short article the difference in costumes in each country. Because countries and ethnic groups have various costumes, each country's costumes also change depending on the period, each locality, each aesthetic trend, and even depending on the weather, into each individual.

The article only compares popular and typical costumes, not considering specific outfits or inspired by foreign costumes. For everyone's reference, the comparison is the only relative, not ultimately affirming that all cheongsam and ao dai outfits have such differences.

Although Ao Dai and cheongsam are pretty similar, there are specific differences:

• Cheongsam does not sew raglan sleeves. Ao Dai does, but there are many styles of Ao Dai, and there are many styles that do not sew raglan sleeves.
• The ribbed rib has a button-down flap that bends or curves while the ao dai follows the raglan line or doesn't (many styles of ao dai later sewed a zipper on the back or side of the shirt).
• In terms of buttons, you will see that cheongsam shirts often use typical fabric buttons by tying fabric strings and creating complex shapes, and for buttoned shirts, buttons or long hangers are used.
• In terms of slits, Ao Dai usually has a deep slit at the waist or a little "flesh" at the waist. While the cheongsam has a slit from the hip or from the knee.

The Ao Dai's flat spreads wide and wide, while the cheongsam curves inward.

Ao Dai always has short or long sleeves, except for some designers who like novelty and have a sleeveless design with a bib collar, while the cheongsam has sleeves or no sleeves (sleeveless type). It's the armpit style, not the sleeveless style).