Okay, did a little research.
Pudong International has two terminals. The pictures that Q posted were of the ticketing counters in terminal 2.
At most airports (in the US, at least), airlines will tend to stay at certain assigned ticketing counters. Pic related is a map of ANA's ticketing location (Japanese airline).
So we need to figure out which airline has a ticketing counter at "E."
Other pic attached shows two flights that departed around 1:00 AM this morning, when Q posted the "E" pic. What I'm guessing is this: secret socities is missing whomever's being extradited from the "E" check-in counter.
If it's United, then the flight should be arriving in San Francisco soon. But we have no confirmation of that–for all we know, it could be Ethiopian Airways.
Also, there were three flights headed to Anchorage after 1:00 AM. Anchorage is a popular stop before branching to other destinations.
Here's a video that shows Pudong. There are many others–I'm just putting here as an example:
https ://www.youtube.com/watch?v=PJhw69_8Xd8