The long-term economic impact of the games on China and Beijing in particular is not yet clear. Some sectors of the economy may have benefited from the influx of tourists, and other sectors such as manufacturing lost revenue because of plant closings related to the government's efforts to improve air quality. Four years after the Games, many of the specially constructed facilities were underused or even deserted. It is generally expected by economists that there will be no lasting effects on Beijing's economy from the games.