A cross posting from my GeographyTeacher 2.0 blog which includes details from my teaching.
China has several towns which are famous for the production of particular items, just as cities in the UK used to be connected with particular industries e.g. textiles in Manchester, hats in Luton etc.
SHEIN is one of the most popular websites for buying low cost (and therefore low quality) items.
There is a town in China which dedicates a great deal of manufacturing to producing items for this website.
This is a useful video describing the impact this has:

