Finally, this time, everyone stopped talking, and began to put away their original contemptuous attitude, and carefully listened to Murong Xiao's next knowledge popularization.

"I don't know if you have been to the coldest area outside the Northern Wei Sai in the coldest season, but I can tell you that when you cross the height of 3,000 zhang and head towards 4,000 zhang, the extremely cold temperature there is definitely not acceptable to the human body."

Seeing Qianye Ying frowning, Murong smiled and said, "So I asked you to prepare whale skins and mink fur before. These two things are the hardiest furs in the world. In addition, I also asked you to burn tinted glass lenses, and this is it. ”

With that, Murong Xiao took out the brown glasses from one of the guards' bags and put them on top of his eyes.

"This is called tinted lenses, and when we climbed the 1,500-zhang mountainside, the whole mountain was covered with snow. Do you know why so many people suffer from eye diseases and end up blind in the cold region of the Northern Wei Dynasty? That is, for a long time, you can see a large area of snow.

Snow hurts your eyes, so if you don't want to be blind before you get down the mountain, everyone has to wear these glasses when you get to the snow. If I accidentally lost it, I made a few more, and if by the end of the day, I didn't have more glasses, so I had to climb the mountain with my eyes closed. ”

"In addition, our food is mainly dried fruits and dried meat, so don't waste the silver carbon we bring with us, which is used to boil water."

After that, he pointed to the sleigh on the ground and explained: "There are few people on Wanling Mountain, there is no ready-made road to walk, and the snow on the mountain must be very deep. If my guess is correct, the snow on the slope is at least thigh-to-thigh, and where the road is slightly smoother, the snow must be higher than a person.

This thing is called a sled, a sled that walks in the snow, and when the time comes, the thing is placed on the sled. And you put on snow boots, although it is inconvenient to look at them now, but walking in the snow is twice the result with half the effort.

Also, when you go up to 2000 zhang, you must use this buckle to tie yourself and the team members together, it is common to lose your foot on the snowy mountain, everyone should be careful when walking, and help each other.

Finally, do you want to tell me that you can all work lightly, and you can walk on the snow without leaving even footprints? ”

As soon as Murong Xiao's words were asked, everyone's heads were buried. Default!

The breeze and the wind touched their noses, and that was exactly the question they were going to ask. Because although they felt that what Murong Xiao said was very reasonable, they also felt that her preparations were indeed very detailed, so detailed that they almost worshipped them.

But if they have light skills, it's a completely different story. In the face of snow, they may need those brown glasses, but they don't need big items like sleds. Leaving aside the weight, the key is useless.

Murong smiled and said: "There is one more knowledge that I haven't talked about, but to put it bluntly, no matter how powerful your light skills are, the higher you go, the more you can't perform light skills." In other words, when you reach a certain height, about 2,000 zhang high, you are just much more athletic than ordinary people. If you want to fly, that's impossible. Also, don't try to use light skills, even if you want to use them, you have to use them on the blade.

This is because if the air is thin and the air pressure is very low, the internal force is used too much, resulting in an increase in lung capacity.

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