What is the meaning of mooncake assassin

Mid-Autumn Festival is approaching, the major brands of mooncakes have been placed in the supermarket shelves, but the high price is always inadvertently "stab" everyone's wallet. That's why they're called mooncake assassins.

Mooncakes, also known as moon cakes, harvest cakes, reunion cakes, etc., are one of China's traditional Han cuisine. Mooncakes were originally used as offerings to worship the moon god. Moon worship is a very ancient custom in China, which is actually a kind of worship activity of the ancient people to the "moon god". Eating mooncakes and enjoying the moon at Mid-Autumn Festival is an indispensable custom of Mid-Autumn Festival in all parts of China. Mooncakes symbolize reunion, and people treat them as festive food, offer them to the moon, and give them to friends and relatives.