It’s because we are in鬼
=ghost 月= month (gwai2 jyut6) (the hungry ghost month)!!!
Story: One story of the Hungry Ghost Festival’s origin is long time ago, there is a boy called Mulian. He tried to save his mother from hell where she had to compete with other hungry ghosts for food.
‧Watch Yu Lan Chinese Operas (神=god功= power 戲 = opera san4 gung1 hei3)
So there are a lot of taboos in this month