"How...how did you know it would rain?"
The sky was high and clear, with blue skies and white clouds. How could it possibly change suddenly and start pouring rain?
"Hehe, it was your salt shaker that gave you the hint!"
"The salt container is getting damp; heavy rain is coming!"
Liu Wei chuckled, "I suppose you all know some of these principles!"
In ancient times, salt purification technology was not advanced, so ordinary people used coarse salt.
Sodium chloride contains two impurities, magnesium chloride and calcium chloride, which give it a strong hygroscopic effect.
When the air humidity is high, the salt container will become damp, which can help predict rain.
However, modern salt is refined very finely, eliminating these two impurities, so the phenomenon of moisture absorption is naturally rare.
"Yes, yes, yes!"
Xue Rengui, Li Su, and Liu Du nodded in agreement.
They never expected that Liu Wei would know these things.
My admiration for Liu Wei is beyond measure.
"My lord, even if we dig the edge of this pool lower and thinner, there's nothing I can do alone!"
Suddenly, Li Su realized a crucial problem: he could take on this task, but he didn't have anyone to help him!
Surely it couldn't be him bringing his mother, wife, and children to dig around in this little pond, could it?
Xue Rengui was certainly aware of this problem: "My lord, the 13,000 Great Wall Legion soldiers and Captain Liu's 3,000 cavalry cannot be moved!"
Liu Wei gave him five days to keep the Xiongnu occupied, but he was short-handed and certainly couldn't send his combat troops to dig a pit!
"Those three thousand surrendered Xiongnu soldiers, even if they come from Shanwu, it's probably too late!"
"If the Xiongnu discover such a large troop movement, it will reveal the secrets of heaven."
Liu Du sighed, "It's a pity that my 100,000 troops have probably just set off from Wild Fox Ridge and haven't even reached Daqing Mountain yet!"
"Otherwise, we can select 10,000 able-bodied men from among them to dig them out!"
Liu Wei was well aware of what Xue Rengui and Liu Du had said, and he asked Li Su, "How many men do you need?"
"I only need a thousand men!"
"Vice Commandant Li, I will give you three thousand men to command, and all provisions will be provided!"
Liu Wei shouted, "Five days from now, use the smoke signal of 'Goodness Without Direction' as your signal. Once the smoke rises into the sky, immediately dig a hole in the pool. Do you understand?"
"clear!"
Li Su loudly accepted the order, "My lord, where are these three thousand men and provisions?"
"In half an hour, they will be waiting on the flat land east of Daihai Lake. You can give them orders by presenting my token!" Liu Wei said calmly.
hiss!
When will the Marquis have three thousand men again on the eastern shore of Daihai Lake?
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