Looks like it may have been some of the commercial airlines from either China or Taiwan possibly...
If thats the case then those passengers also tend to be some of the worse to deal with, i’ve often seen stories on the news and heard from friends that passengers on those airlines trying to open emergency exits before or right after landing among many, many others...
Then there are also ones of children defeicating in the middle of the isle halfway through the flight because the parents cant be botehred walking to the toilet...
I hope those flight attendants make good money. That is so disgusting and disturbing. How is it some people have no shame at all?