Yeah these look like sauna girls. I would even go as far as saying that some of them are only above average looking by sauna girl standards. Keep in mind that when you're dealing with saunas in a major/westernized city like Shanghai, most of these girls aren't local. Most of them came from the poorer western or northern China to make money in Shanghai (and possibly meet a rich guy who'll pay them a monthly allowance so they can stop working). Basically, there's going to be a higher concentration of fine chicks in Shanghai compared to the rest of the country. You won't be disappointed, trust me.