What do you mean by hanging three lanterns in the dining room?

Lighting is auspicious, beautiful and fascinating.

In the street, we always see several lanterns hanging in front of restaurants. Because we know that lanterns are red, they will be conspicuous in the street and can also attract customers.

Hanging a few red lanterns will also be very festive and auspicious, perhaps for a good color. Moreover, the light of lanterns will also reflect warm colors at night, which will attract customers' attention, which may be the main reason.