A wasp will spit out its larvae.

I saw it today, in a villa of the Republic of China in Nanjing, but it doesn't seem to be a wasp, it seems to be killer bees. This is a light snow festival in winter. Before this, small carnivores were found on the steps. Later, it was observed that it was indeed killer bees who carried his larvae on his back and sent them to the ground to throw them away. I analyzed that the hive was in the corner, there was not enough space for them to survive, and there were a lot of larvae, so I chose to discard the dead and inactive larvae. This larva can be eaten in small quantities.