Friend A who I went to grad school with (also likes cheap/free food, has been climbing with us recently) gave us some mooncakes she made! :’) They were presumably for the Mid-Autumn Festival, which happens around the autumn equinox and is coming up! The days are definitely getting shorter.
The mookcakes are actually the “snow skin” version (recipe that Friend A used), which uses a mochi-esque wrapper. Apparently snow skin mooncakes are easier to make than the traditional baked kind, so a better choice for at-home creation.