Common Asian Yellowjacket (Vespula flaviceps, 细黄胡蜂).
Most insects seem to be asleep or hiding, but I found one wasp nest that is still active. Here the yellowjackets were perturbed by fallen leaves blocking the entrance to their nest; some worked hard to remove the obstructing foliage while others came and went. The larva of this species are quite edible, but nevertheless I left them undisturbed.
