This slide is a bit confusing to me. The mobile lab is attached on top of the command and resource modules combo. The combo are for crews to fly to and return from moon. None of them are going to land on the moon surface. The mobile lab seems not able to land on itself, so there must be another lander module for it. The lander is not in this slide. For safety reasons the crew will land on moon surface separately from any cargo including the lab. The lab will land on top of another lander. There is no reason to dock them together in any orbit regardless how they get into lunar orbit.
Unless, what we are seeing (the command and resource modules) are actually lander for the lab. But then that thing really don't look like any lander.
Do you have more slide from the event? Maybe there is something to explain. Or the author was just lazy to make things look right.
Unfortunately, these are all the slides I have. I keep tabs on the Weibo user who posted this, so I'll update if there's more information in the future.