I bought this:
store.doverpublications.com/04…and was searching for more information online about Chinese fashion history, when I saw your "study" on google images. I see that you have posted drawings from other eras/places as well, from other coloring books I own or have seen.
I don't think it's fair of you to post your historical fashion sketches without credit to the original artist. Most, if not all of them are directly copied from Dover Publications' historical fashion coloring books.