1. The catering industry is underdeveloped: the catering industry in Nanxin Lane may not have a snack culture, and there are no restaurants open at night. If there are no night markets, nightclubs and 24-hour convenience stores nearby, it is difficult to find a place to buy supper at night.
2. Living habits: Different places have different living habits. In some places, people are used to having breakfast or breakfast at night instead of having dinner at night. If the residents of Nanxin Lane generally don't have the habit of taking supper, there won't be many people going out to eat supper at night.
3. Safety and public order: If the public order in Nanxin Lane is poor at night, or there are relatively few residential areas at night, residents may be reluctant to go out to buy supper to ensure their own safety. This will also lead to fewer people eating supper at night.
It should be noted that the above are only some possible reasons, and the specific situation may need to be analyzed in combination with local actual conditions.