Still with a chinese risk, but I believe even for that they've been trying to get less tied to China. It's miles ahead in comparison to PDD, Alibaba and other Chinese firms.
They are the AWS of clothing. Before AWS hosting companies existed, but they sucked and were really limited on how they work, like taking time to boot up servers etc, then AWS came. Similarly, Shein have logistics operations that enable them to ship faster and sort of operate almost like a local brand doing DTC, but with much lower prices and operating costs.
Folks here that typically have no idea about business will likely complain that it's just yet another copycat selling fast fashion, without any knowledge about how it's hard to run the kind of operation that they do and how much logistics they are doing, nor don't understand D2C.
They are so successful that they completely changed the fast fashion landscape. There will be similar companies like it with a similar strategy and this will likely bankrupt the likes of H&M unless they adapt their business model as well.