Many people even took out their mobile phones to take pictures.
While passing through the tunnel, several team members sitting next to me suddenly patted their ears and said, "Hey, my ears are blocked."
Cen Li quickly told them, "Just drink some water and swallow it, it will be like this after passing through the tunnel."
"Oh well."
Everyone quickly drank the water, and their ears were indeed clear. They asked in surprise, "Xiao Li, what's the reason? Why are your ears blocked?"
Cen Li now has a very rich knowledge reserve. This is just the simplest thing, so she naturally knows it.
So he told everyone, "This is caused by the pressure difference between the inside and outside of the ear. The speed of the high-speed train is very fast, and the area of the tunnel is relatively narrow. Therefore, when the high-speed train quickly enters the tunnel, the air inside will be quickly
Squeeze, thereby forming a relatively large air pressure difference."
"So that's it." Everyone nodded, but they were obviously still a little confused.
So Cen Li continued, "In the human body, there are some balance receptors in the tympanic membrane and middle ear cavity, which are very sensitive to the pressure difference. Under normal circumstances, the air pressure inside and outside the tympanic membrane should be balanced. Through the Eustachian tube
For coordination, the Eustachian tube is between the middle ear cavity and the nasopharynx.”
Cen Li paused and continued, "When passing through a tunnel quickly, or in some cases when taking off by airplane, there will be a pressure difference when landing. This pressure difference will cause temporary impairment of Eustachian tube function.
, there will be a feeling of pressure difference between the inside and outside, causing the ears to feel stuffy and blocked. In some serious cases, it can even induce dizziness and tinnitus."
"Now we completely understand!"
Everyone gave a thumbs up, and then a team member immediately complained, "Hey, my ears were just opened, but why are they blocked again?"
Upon hearing this, Cen Li quickly said, "In this case, it is recommended that you open your mouth wide, swallow, yawn, or chew gum, and try to keep the Eustachian tube in an open state. When the pressure on both sides is opened, the pressure on both sides will be adjusted and balanced. This feeling
It will disappear.”
"Then I just bought some chewing gum. Come on, come on, let's all take one." One of the team members quickly took out a box of chewing gum, and it turned out to be Xuanmai.
Cen Li has a deep memory of this chewing gum, mainly because it is so refreshing, and the energy is really not acceptable to ordinary people.
"I like eating this too, thank you!"
The team members were not polite and reached out to take two pills.
Fortunately, there are enough jars, otherwise I'm afraid there won't be enough.
After eating chewing gum, the situation turned out to be much better, and then everyone was attracted by the magic of the high-speed rail.
Because it didn't last long, everyone didn't have enough seats and were reluctant to leave when we got off the bus.
As for Cen Li, she originally wanted to take pictures with the train, but it turned out that the train started too fast and it was too late, so she had to give up.
Bai Xuanyuan also followed them with bodyguards, and did not leave until she entered the designated hotel.
As athletes, hotels have been specially emptied and various security measures have been strengthened, just to give athletes the best rest environment.
After arriving in the room, Cen Li quickly washed up and then left the hotel to meet Bai Xuanyuan. The two made an appointment to have dinner together.
Of course, this was also done in advance to the coaches.
"Didi didi..."
As a result, as soon as she went downstairs to meet Bai Xuanyuan, her cell phone rang.