Du Wu suddenly thought whimsically: "Aunt Shaohan, can your technique of controlling the hidden butterfly be used in war, if you hide the entire army, wouldn't it become an invincible army, this army can appear in any unexpected place of the enemy, it can be called a divine soldier from the sky." ”

Shao Han smiled and said: "The idea of the princess, Shao Han has also had it, but there are some problems in the middle. First, the number of hidden butterflies is limited, I have not yet found a way to reproduce in large numbers, and if I want to arm an army, I need at least a million hidden butterflies. And now there are only a few thousand. Another difficulty is that the potion that attracts the butterfly is extracted from a flower called 'Perfume Lily', which has an extremely strong aroma. After purification, I removed the aroma from it, but the effect of attracting hidden butterflies remained the same. If it is to be put into use in large quantities, it is necessary not only to plant a large number of perfume lilies, but also to carry out a lot of purification work. Otherwise, although the figure is hidden, but the overwhelming aroma comes, how can the enemy not know that it is the army of hidden butterflies that has arrived. ”

When Du Wu heard this, it turned out that this matter was not as simple as she thought, it seemed that she was still too young, and her mind was whimsical as soon as she was hot.

At this time, Du Wen on the side suddenly interjected: "Perfume lily, I have heard of this kind of flower, and it has been recorded in the medical books of the predecessors of the God of Medicine." This flower has the effect of calming the nerves. Growing one plant at home can cure insomnia. However, this flower has a strange fragrance, and some people who are allergic to the fragrance of flowers are difficult to accept. The predecessor of the god of medicine also mentioned a method that can quickly remove the fragrance in this flower, while the other effects remain unchanged. ”

"Oh, there is such a way, does the little boy know how to do it?" Shaohan was very interested when he heard Du Wen's words, and couldn't help but pay attention to Du Wen, and even changed his title to the little boy.

Du Wen thought for a while and said: "I remember that before planting, the seeds of this perfume lily only need to put a little vinegar in the water, soak the seeds in it for a few days, and then plant them, and the flowers will have no fragrance, but the medicinal effect will not change." But I don't know why. ”

Shaohan was overjoyed when he heard this: "If the little boy's words are true, but it has saved Shaohan a lot of things, if I can breed a large number of hidden butterflies in the future, maybe I can really build an invisible army to help my flower barbarians defeat the black barbarians." Shaohan thanked the little boy here. ”

Du Wu smiled at Shao Han, revealing the little tiger tooth on her lips and said, "Aunt Shao Han doesn't have to be polite, although Brother Wen and I are not compatriots, but we are like sisters and brothers, you don't have to see each other, Brother Wen, do you say yes?"

Du Wen scratched his head and said with a smile: "Sister, that's natural, we grew up together, sister, you are still very good to me except for eating a few more chicken legs from me." This time, I was given the medical book of the predecessor of the god of medicine, and the chicken leg matter was also written off, haha. ”

Du Wu pretended to be angry and knocked on the top of Du Wen's head, "You dare to mention the chicken legs, aren't the chicken butts all cheaper for you?"

Listening to the conversation between the two, Du Jingzhong and Shaohan were confused. But the sincere sister-brother relationship between the two is touching.

Shaohan said: "Princess, we will secretly set off from the back door in a while, I have already hidden your chariot with a hidden butterfly, and when we set off again, no one will know our whereabouts." ”

Du Wu was overjoyed and said: "Great, Aunt Shaohan, let's make our small team become a surprise soldier first and catch the enemy off guard." ”

Everyone also laughed, laughed for a long time, and quietly checked out and left. Those who didn't know thought that they would rest at the inn for the night, and when they looked back the next day, their group had already disappeared.