Is the questioner asking "What is the cause of the smell of burning paper in the air in Jiamusi?" The reasons are air pollution, catering.

1, atmospheric pollution: the air quality in Jiamusi City is affected by industrial emissions, traffic exhaust and other factors, resulting in serious air pollution. Various particles in the air, harmful gases and other substances mixed with the harmful gases produced by burning paper will produce the smell of burning paper.

2, catering: in some catering industry, such as barbecue restaurants, hot pot restaurants, etc., smoky scenes will also produce the smell of burning paper. Smoky ingredients, fumes and other factors in these establishments will be mixed with the flavor of burning paper in the air.