Crew sleeping areas are installed horizontally
Capture from the video above
Translated with DeepL
"Two missions were added before the SZ-12 recovery: SZ-12 and Tianhe fly-around, and SZ-12 and Tianhe radial R-bar intersection test."
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"China's space missions will be intense for a month or so starting today. Multiple launches, one astronaut exit, TZ-2 evacuation sky and backward docking interface, in-orbit remote operation TZ-2 rendezvous to sky and backward docking interface, SZ-12 recovery, TZ-2 orbit rendezvous and docking to sky and forward docking interface, TZ-2 forward docking interface patch test, TZ-3 launch rendezvous and docking to sky and backward docking interface, SZ-13 launch rendezvous and docking to sky and radial docking interface"
https://twitter.com/SegerYu/status/1428615854258675714?s=20