I just think the british are very sneaky when saying this. They say this like it's all checked out before even proving and knowing. Like Huawei, first assume guilty and have troubles then investigate and find nothing wrong. Maybe more complex issue in real life but this is where I think this western style of manipulating people's thinking is sneaky. More sneaky than very clear propaganda like in North Korea. Even Chinese propaganda most of us know very well and think is stupid.
So now it proved more than 20 are Vietnamese. Why did they say all 39 are Chinese nationals before even really conducting investigation. This is too strange and purposeful.
Since more than 20 are Vietnamese, I guess probably all are Vietnamese. The transport originated in China because it must go through China and maybe the smugglers are Chinese mafia or Russian or eastern European. Chinese media sources claim some families of victims received payment refunded from the smugglers. These smugglers maybe think they are doing a service in the world like a necessary thing but they cause this loss of lives. Should be caught and criminal charged.