Today's sudden drop in temperature will make many people feel the arrival of winter. Take the temperature in Beijing for example, it is around 10 degrees below zero in normal times. The difference is not small, and the cold wave has not stopped yet.An orange alert has been issued as a cold snap continues to affect China, prompting officials to give five defense points.

Now that the orange alert has arrived and the cold wave continues to affect China, let's first take a look at what an orange alert is.A cold snap is a natural weather phenomenon.The orange alert is the highest level of cold wave warning in China, in case the cold air moves southward on a large scale, causing a wide range of sharp cooling and northerly winds.

Warning standard is: in the next 48 hours to two or more provinces, autonomous regions and municipalities directly under the lowest average temperature in most regions or the temperature decreased by more than 16 ℃ with level 6 and above the wind, more than half of the area north of the Yangtze river basin and its average temperature or the lowest temperature will drop by more than 12 ℃, the middle and lower reaches of the Yangtze river region in winter, spring and autumn jianghuai region) lowest temperature dropped to 4 ℃, local dropped below 2 ℃.

To combat the orange alert, the China Weather Network now offers five defense guidelines:

1. Personnel should add clothes to keep warm;Be prepared for high wind and cold weather in production;

2. Doors, Windows, coarboards, scaffoldings, temporary structures and other structures that are easy to be blown by the strong wind shall be fixed, and outdoor goods that are easy to be affected by the strong wind shall be properly arranged;

3. Take shelter from the wind and inform outdoor operators to pay attention to safety;

4. Pay attention to the latest information about media reports on wind cooling in order to take further measures;

5. Traffic and public security departments should prepare for road icing according to their duties.