The popular name is called positioning flower.

There are many patterns of this type for people to choose from in the chiffon fabric market.

If you are in Guangzhou, I suggest you go to the first floor of the International Textile City to have a look. You can find this type in areas D and E. The lowest price is chiffon fabric, which costs about ten yuan. One yard, of course, there are also pure silk stores in the market, you have to find the details yourself.