There is a family next to the Li family, which is also a mud house and an earthen courtyard. It is very poor.
In general, in this village, apart from the mansion of the old scholar, only the house of Lizheng's family can be seen, and the other families are poorer than each other.
An old woman was sitting in the dusty yard, holding a bong, smoking a cigarette.
The smell of smoke is very pungent, and it is estimated that it is the worst tobacco leaf.
Aware of the gaze from outside the door, the old woman raised her eyelids lazily, glanced casually, and then continued to smoke guns, ignoring them.
"It seems that most of the village is elderly." Bai Youwei whispered to Shen Mo.
Whether it is an old scholar, or Li Zheng and Ma Shi, they are all elderly people in their sixties.
Even the son and daughter-in-law I saw in the mourning hall looked like they were in their early 40s. The younger ones were children, but there were no young people in their teens or twenties.
"This place is too slanted and poor, how can young people stay here?" the old woman in the yard suddenly said, "Everyone who can walk has left, and the only ones left are the old people who can't walk, and the old bachelor who can't marry a wife. ."
Several people were stunned for a while, but they didn't expect this NPC to give information so neatly.
Du Lai walked into the yard and asked politely, "Do you know Mrs. Li next door?"
The old woman listened, smiled silently, the folds on her face were like deep ravines, giving people an extremely uncomfortable feeling.
At this moment, there were coughs in the room, and then they heard an old man say:
"I've been sick for a long time. When will my daughters come back to see me?"
The old woman took the smoking gun, kowtowed lightly on the ground, and said to the old man in the room, "Didn't the eldest girl just come to see you yesterday?"
"Why didn't the three sisters come to see me together?"
The old woman sneered and said, "That's not easy. The eldest daughter returns every five days, the second daughter returns every four days, and the youngest daughter returns every three days. Who knows when they will be able to see you together."
The words returned in his mouth, but his eyes looked dimly at Du Lai, and Fu Miaoxue, Shen Mo, and Bai Youwei behind him.
Everyone understands that this is the NPC who is giving them a question.
Bai Youwei breathed a sigh of relief.
Fortunately, this question is not difficult.
She asked the old woman, "When was the last time the three daughters got together?"
"There was a reunion once during the Mid-Autumn Festival." The old woman replied.
"How many days have passed since the Mid-Autumn Festival?" Bai Youwei asked again.
The old woman sneered: "The old lady is too old to remember..."
Bai Youwei frowned slightly.
Not only her, but Shen Mo and Du Lai also frowned.
"What's wrong with you?" Fu Miaoxue didn't understand why, "Is this question difficult?"
"The question is not difficult, but there is something missing." Bai Youwei explained, "This is a question in the ancient "Sun Tzu Suanjing". It asks a family with three daughters who are married. The eldest daughter returns to her parents' home once every five days, and the second daughter Go back to her parents' home once every four days, and the younger daughter will return to her parents' home once every three days. After the three daughters leave their parents' home on the same day, how many days will they meet again?"
"How many days?" Fu Miaoxue blurted out.
Bai Youwei: "Sixty days."
The number of days is the least common multiple of the number of days between the three daughters going home.
That is, the three numbers 3, 4, and 5 are multiplied together to get 60.
Fu Miaoxue blinked and said, "Then tell her the answer."
Du Lai took her hand and pulled it behind him, "What is missing is the prerequisite. We don't know when the three daughters left together."
"There should be clues about the Mid-Autumn Festival nearby." Shen Mo said, "Let's look for it separately."
As long as you figure out what day the Mid-Autumn Festival is in this game, you can calculate the time when the three daughters will come back together next time.
Fu Miaoxue said, "Oh, so what are you doing so troublesome~"
After speaking, he jumped up in front of the old woman: "Hey, your three daughters will be back tomorrow~"