Is Shein from China?

Could you please clarify for me if Shein, the popular online fashion retailer, is indeed based in China? I've heard conflicting information about its origins, and I'm curious to know for sure. I'm particularly interested in understanding the company's roots and how it has managed to gain such a significant global presence. Additionally, I'm wondering if its Chinese origins have played a role in its success and if there are any unique challenges or advantages it faces as a result. Thank you for your help in clarifying this matter.