Grandmother Dai picked up the copper plate and asked, "Old learner, how is grandma's arithmetic test?" ”

"No problem." Gong Changyu nodded confidently, he was still very good at arithmetic, especially mental arithmetic.

"How much does a tael of gold weigh?" Dai said.

"One tael of gold is ten coins, which is equal to ten taels of silver, which can be exchanged for ten copper coins." Gong Changyu responded.

"How much is that tael worth of copper coins?" Dai said around the bend.

"Consistently, or rather, hanging. In the early years of Emperor Daoli, one tael of silver was exchanged for money and one hanging, that is, one thousand Wen. In the twentieth year of the Taoist calendar, one tael of silver can be exchanged for 1,6700 copper coins. Gong Changyu replied without thinking.

"How much grain can I buy for a tael of silver?" Dai asked again.

"The teacher said that the price of grain is different from the empire in different places, so it is based on the Baocheng Mansion of Jingnan County, and the three kinds of grain are calculated based on millet, sorghum, and corn, with an average of one tael of silver per warehouse stone." Gong Changyu wrenched his fingers and calculated, "One stone is equal to one hundred, so one tael of silver can buy one hundred catties of rice (in ancient times, the sixteen taels system was implemented, and one catty was sixteen taels). ”

"Well, that's right. Old learning, grandma will test you again a more complicated point, if a pound of pork is three cents and four cents, how much money does three pounds of pork cost? ”

"Ten cents and two cents and three millimeters." As soon as the grandmother finished speaking, Gong Changyu calculated the result.

"Yes. You can do the math, and it's fast, and grandma is relieved. Dai said with a smile, "At least go and do business, you won't be taken advantage of by others." ”

"Grandma, although I don't know a few big characters, it is difficult for ordinary people to calculate me." Gong Changyu clenched his little fists, and his heart was full of joy.

"Old learner, you have to write contracts with others to make a big deal, you don't have any ink on your chest, what should you do?" Dai suddenly thought of this tricky question.

"Isn't there a Heavenly Yuan brother?"

"What if he's not with you?"

"This ...... I'll talk about it later, I'll have my own way then. Gong Chang scratched his head.

"It is better to ask for others than for yourself. You went to your uncle's house to learn martial arts, and when you have free time, you have to put in some effort to be more literate, and you have a lot of ink in your stomach, so you can always find a place to use. Dai put the copper coin back into Changyu's hand, "A regular laborer can only earn two to three copper hangs a month, and he has the strength to starve to death in these years." If you want to make a lot of money, you have to learn a little bit of real talent. ”

"Grandma, grandson remembered." Gong Changyu lowered his head and hugged his grandmother, "Tomorrow my mother will send me to my uncle's house, you have to take care at home." I'll be back to see you often. ”

"Old learning, Tangwei Chong is not very far from us, if you miss grandma, come back." Dai dressed Chang Yu.

"Hmm. Grandma, mother, I'm going to sleep, I have to get up early tomorrow and go to my uncle's house for breakfast. Gong Changyu stuck out his tongue and was ready to go back to his room to rest.

"Mother, we can't enter the Zhu family compound empty-handed, we have to take something, what should we take?" Liu said to his mother-in-law Dai.

"Oh, too. Aren't there two freshly dried hares on our kang? Dai replied.

"Grandma, don't you talk about rabbits, I almost forgot that I put a few sets on Houlong Mountain in the afternoon, maybe some rabbits have been caught at this time." Changyu returned and said to his mother, "I want to go and see it now." ”

"It's getting late, and it's not safe to go up the mountain." Dai shook his head.

"Don't be afraid, just make a bonfire. Tomorrow morning, if someone goes into the mountain early in the morning and is taken by someone else, what a pity. After Chang Yu finished speaking, he ran to the kitchen and lit a fire.

"Son, don't go." Liu Shi took Chang Yu's hand.

"Mother, don't stop me, if you don't worry, you can go with me." Changyu broke free from his mother's grasp.

"Okay, you wait, I'll go get a fire too." Liu hurriedly went into the kitchen to get a fire and came out with a firewood knife.

"Mother, take the hare, what are you doing with the wood knife?" Gong Changyu was taken aback.

"If you encounter bad people on the mountain, you can use it for self-defense." Liu said, holding a firewood knife.

"Oh, I see. The second Laizi in the village also robbed me of a pheasant last time, I really want to cut off his hand with a knife, it's so lazy guy! Gong Jichang said angrily.

"Son, someone else robbed your pheasant, why didn't you tell your mother?" Liu asked.

"Seeing his pitiful appearance, I'll spare him once. If you come and rob me of the rabbit again tonight, I'll go down with a knife and chop his hamstrings. Gong Changyu gritted his teeth.

"Son, if you cut someone, my family won't have the money to pay for the medical expenses. Besides, there is a second-rate son, who is not afraid of heaven and earth, and it is not easy to provoke. Liu said worriedly.

She remembered that on the way to work for the landlord's house outside, she bumped into Er Laizi several times, and his sleek eyes swept around her with bad intentions, and she saw that her heart was furious, and if it wasn't for the daytime, she would probably be ruined by him. In retrospect, I was a little scared!

"Mother, I'll go get a machete." Gong Changyu entered the room, took out a bright machete from under the bed, and walked to his mother, "If Er Laizi bullies me again, the knife will speak." ”

"Son, until the last resort, it's best not to hurt people." Liu looked at the extremely sharp machete and persuaded.

"Little grandson, I will also compensate you for it, and many people will take care of it." Dai said.

"Grandma, your legs and feet are inconvenient, just stay at home, it's enough to have me as a protective mother." Gong Changyu waved his hand and said that he would not let his grandmother go.

"No, Er Laizi is a psychopath, he has a lot of strength, and if you don't get it, you will suffer a big loss." Dai Shi picked up a horse lantern from under the shrine, lit the fire, and took the firewood knife in Liu's hand, "Let's go, old learning, you lead the way." ”

"Grandma, it's dark outside, be careful." Gong Changyu pinned the machete to his waist, held the torch in one hand, and led his grandmother in the other, and went out of the house, while Liu followed slowly behind.

After a while, the three of them climbed to the top of Houlong Mountain, only to hear the owl "cooing", giving people an eerie and terrifying feeling. Gong Changyu held the torch and found the place where the trap was set. A hare was foraging on the ground, and when he saw someone coming, he swooped down, stepped on the trap, and with a bang, he was caught by an upside-down hanging bamboo, and his front legs fluttered in mid-air.

"What a fat big gray rabbit!" Gong Changyu whispered, "Grandma, mother, look at it-"

At the moment when Gong Changyu turned around, he saw that more than ten steps away, his mother Liu was covered by a masked man, the torch fell to the ground, and the man held her hostage and slowly retreated into the depths of the bushes.

"It's not good, there are bad people!" Gong Changyu knew that the person who came was trying to do wrong, so he raised the torch high, illuminated the man's face, and shouted, "Let go of my mother-"