"Scared me a lot." At noon on March 5, "The Legend of Zhen Huan" actress Lan Yingying posted a photo on Weibo of a floor covered with water, exclaiming, "I've never seen it before" - she took it The photo of the floor looks like it is leaking, but it is actually the daily life in

"Scared me a lot." At noon on March 5, "The Legend of Zhen Huan" actress Lan Yingying posted a photo on Weibo of a floor covered with water and exclaimed, "I've never seen this before" -

She The photo taken of the floor looks like it is leaking from rain, but it is actually the daily life of Guangdong Hui Nantian. Some people say that the current Guangdong and Guangxi regions are a huge water curtain cave, and posted a picture in the comment area -

@loubinrobin: Feel the return of Shenzhen to the south.

@China Weather Enthusiasts: Going back to the south is really a bit scary.

@婷婷猫: When I returned to Nantian, the wall cried, and so did I.

@koala loves to sleep: a deep fear engraved in the bones of Guangdong people...

Many northern netizens were also "scared" and asked a lot of questions:

Cha Yunxi: I have never experienced it, so where does this water come from? Ah, will there be one on the bed too? That is to say, will clothes and quilts become fashionable again?

thegirl-my: So won’t the floors in the south be damaged by soaking?

Classmate Yu Xiaoao: As a northerner, I really can’t stand damp quilts and wet clothes.

Middle-aged old girl: It’s better to be on par with Heilongjiang. The house is still heated, and the geothermal house is very dry. I put a basin of water in the house every day, or dry wet clothes.

In addition to Guangdong, there are also netizens from Fujian, Jiangxi, Zhejiang and other places who "feel the same":

Eating a peach in summer: It's the same in Jiangxi. When I got home, I thought there was a water leak. When I looked in the mirror, it was just south wind.

is your little dragon girl: Xiamen is the same today, I hate going back to Nantian.

seaninstorm: It’s the same in Jiangsu. It rained a while ago, and water hung on the wall near the window. The quilt was also wet, which was super uncomfortable.

According to @guangdongweather, on the 5th, as the cold high pressure moved eastward, strong southerly winds surged ashore again. The temperature and humidity in Guangdong increased with (light) fog. The highest temperature in most areas during the day could reach above 20℃.

In Guangzhou, affected by the southerly warm and humid air flow, the temperature will continue to rise on Tuesday, and the return to the south will continue. Affected by a new wave of cold air starting from Wednesday, the daily average temperature dropped by 4°C to 6°C, with the highest temperature falling below 20°C, and gradually eased back to the south.

What day is "Hui Nantian"? What is the difference between it and the rainy day?

"In late winter and early spring, after the cold air from the north passes, the warm and humid air from the south returns and the air humidity increases, causing water droplets to appear on the ground and walls. This is the 'return to the south'." Cao Yunchang, chief scientist of the Meteorological Observation Center of the China Meteorological Administration Introduction: "Hui Nantian" is common in Guangdong and Guangxi, and occurs almost every year in February and March.

At this time of year, the warm and humid air flow from the sea begins to strengthen. After the cold air moves away, the warm and humid air flow quickly counterattacks, causing the temperature to rise and the air humidity to increase. At this time, after a winter of low temperatures in the south, objects are completely cold both on the surface and on the inside. When the surfaces of some cold objects encounter warm and humid airflow, they are prone to produce water droplets, and the walls and even the ground will "water".

Although it sounds very similar to Huang Meitian, which is familiar to Hangzhou people, the formation principle is different. Generally speaking, two conditions are needed to return to Nantian: first, there must be a long period of low temperature; second, there must be a sudden change in weather, and after a long period of low temperature The weather suddenly warms up and the humidity increases.

How to make your home drier?

The simplest method is: close the window!

"Especially in the morning and evening, close the windows facing south and southeast, because water vapor mainly invades from these two directions." Cao Yunchang said that there are also three ways to alleviate the "return to the south":

Sun exposure Method

In a room with good sunlight exposure and good ventilation, you can open windows appropriately to let in sunlight when the temperature is high at noon. By raising the room temperature and improving ventilation, the temperature in the room can be higher than the dew point temperature.

Warm attack method

If the lighting and ventilation conditions in the room are poor, you can try heating or increasing exchange with the outdoor thermal environment to increase the indoor temperature.

Cold attack method

is to turn on the cold air or dehumidification mode of the air conditioner, or use a dehumidifier to keep the room dry and reduce the humidity of the indoor air.

(Source: Chengshi Interactive)