they would announce it proudly if it did

I don't know if that's true. Most trans people I've known who have some sort of small business or side hustle don't announce that they're trans in their resale shop.

nah, the trans women in china don't announce their transness to the world. You'd have to look at their trends on social media or ask them directly to find out. I know because I'm fwiends with a t4t couple living in China. There's like a 50% chance those blåhajs are designed or made by at least one Chinese trans woman.