Should office workers take a holiday during smog days?

No, Xi'an has frequent haze weather. Since the 18th, Xi'an has been experiencing smog for a week. According to statistics, Xi'an's air quality index has reached "off the charts" for nearly a week. The air pollution index exceeds the normal 500 index, ranking among the top among similar cities in the country. The city wall is gone, the bell tower is gone, the Big Wild Goose Pagoda is gone, the TV Tower is gone, and even Xi'an is gone... In the windless weather in Xi'an, you can often see smoke filling the entire ancient city, blurring the vision and affecting Regarding transportation, traffic control measures have been implemented on many highways in some haze-stricken areas due to haze disasters. You know this Silent Hill-like hazy weather.