The Wind Domain Lord was taken aback, not believing it, and his eyebrows furrowed tightly.

Hua Xi was speechless, did they think she was planning to come to the Wind Domain? She's got to come!

There was no way, so she had to demonstrate how to filter the water again, and said a simple way to stay away, and the domain master was impressed by her.

"I didn't expect it...... It's as simple as that. ”

The biggest problem of the demon clan for so many years has been solved by her in three or two clicks, which is really amazing!

"Your Excellency is indeed not simple, if you solve this problem, at least you don't have to worry about the water problem in the future." The domain owner said happily.

"Father, although the water is fine, the water source is still a big problem, and there is not so much water in the demon world." Feng Ling said.

The domain lord also frowned.

Only Hua Xi said in surprise: "What? You say there is no water in the Demon Realm? So big Huangquan River, you say there is no water? ”

"Hmph, the Huangquan River is so dangerous, taking water from it is tantamount to looking for death! Besides, the water in the river is not drinkable at all, and even if it is filtered, you will still get sick if you drink it! ”

Feng Ling glared at her again, ignorant girl!

"Even if you don't drink it, the water in the Huangquan River can be irrigated and can be used for water, and it can also use water power, which is simply the most precious resource, right?" Hua Xi said.

Both the Wind Domain Lord and Wind Ling looked at her strangely.

Feng Ling said: "If you don't understand, don't talk nonsense, the Huangquan River is so fierce, it is difficult to get water, let alone irrigation." ”

"If you build canals and dams, you can make good use of the water resources of the Huangquan River, the Huangquan River is not scary at all, but you didn't take the time to get to know him!"

"Aqueducts? Dam? Feng Ling narrowed his eyes, still not believing Hua Xi's words.

"I'll draw you a picture and bring me pen and paper." Hua Xi sat down directly in the domain master's position and beckoned.

That momentum...... Feng Ling didn't react for a while, and obediently handed her the pen and paper, and when she reacted, she didn't know how angry she was!

But Hua Xi had already buried his head in the paper and painted.

She just drew the principles of reservoirs and dams based on what she knew, and then pointed to the patterns on the paper and explained them to father and son.

Feng Ling listened attentively, and looked at Hua Xi's gaze, becoming more and more shocked and incredible.

Oh my God, what's in this woman's head!?

"The purpose of building the dam is to raise the water level, and the terrain of the Demon Realm is slightly lower in the southeast, so the canal is built along the northern foot of the mountain to the east, and the main canal is distributed in the highest area, bringing in the water of the Huangquan River, and this whole land becomes a natural irrigation area."

Hua Xi's fingers drew a large piece of land on the drawing, covering hundreds of miles from the east and west of the Demon Realm!

"The land of the Demon Realm is dry, desolate, and lacks water, and if there is water for irrigation, some crops can still grow."

"But if the water level is raised, if the Huangquan River floods upstream, wouldn't it be a bigger disaster?"

Feng Ling had no time to take care of anything else, and he even forgot that he didn't like Hua Xi, and all his attention was focused on the drawing.

He had never been so excited in his life.

Think of what a great feat it is to be able to change the situation of poverty and poverty in the Demon Realm for tens of thousands of years!

He may be famous for eternity......

"That's why we need to build a dam." Hua Xi said with a smile, "When irrigating, the dam gate is closed to bring the river water into the irrigation area, and the gate is opened without irrigation, so that the river water flows naturally." ”