I was searching for birds at the back lane of Jalan Tan Tiong one Sunday evening.
There used to be a busy road that leads to the Police Flat, but now that building is now abandoned and the road became narrow overgrown with lalang and tall grass.
Than I noticed a heat of insect activity on the second floor of that building. There you are, one big wasps nest and so many of that bugs flying around.
Lesser banded hornet (Vespa affinis)
More info about this species at vespa-bicolor.net here.