I use amazon to buy ebooks, and order stuff to my parents or friends back home if they are coming over, when there’s something I can’t get locally.

Taobao is the same garbage as Aliexpress, Temu would be Pinduoduo (which is so riddled with poor knockoffs that locals avoid it and crack jokes about the stupid foreigners thinking it’s hot shit).

The only somewhat trusted platform is JD.com (jindong) or official brand shops on Taobao. Tmall belongs to Taobao, that’s just their own shop (as opposed to third party sellers), but there’s no guarantee you actually buy authentic products either.