Similar to aliexpress.
Sometimes its fine and sometimes its a scam and you will need to try and get a refund.
Aliexpress or banggood have alot better service when stuff goes wrong. (i’ve always had a refund)
If you want advice from buying from china /csg/ (sweary name so not saying the name) thread on 4chans /g/ (Techolgy board) is a good one for advice.