Li Kangping left Columbia University and went to the business district of Manhattan, where he deposited $28,000 in Citibank and left a few hundred dollars in pocket money.

Macy's flagship store is opposite Citibank, and Li Kangping enters Macy's to learn about the situation.

Macy's focuses on high-end merchandise, and they are very efficient, with 400 sets of mahjong already on the counter for retail.

The retail price of ivory mahjong is $500 and bamboo mahjong is $45.

"Hey, there's mahjong here!"

A well-dressed customer shouted excitedly.

"$500 for a pair of ivory mahjong seems to be the same price as I know. Miss, I need two pairs of ivory mahjong. ”

"Okay, sir, it's your mahjong, have a nice day."

"I want a pair of ivory mahjong too!"

"I want five pairs of ivory mahjong!"

"Okay, thanks, this is your mahjong."

"Terry, $500 ivory mahjong seems a bit expensive."

"Lucy, you know, the people who play mahjong are decent people in New York, and decent people don't care about the price, they focus on the social experience of being superior."

"But Terry, our third child has just been born, and it costs Frank a lot of money to go to that noble school."

"Lucy, what do you say?"

"But, but...... But I really want to buy a pair of mahjong so that I can invite my girlfriends to play mahjong at home. ”

"So, Lucy, let's buy a pair of bamboo mahjong, you see, bamboo mahjong only sells for $45, and I think we can afford it. Could it be that the flush of ivory mahjong enjoys a 16x bonus? No matter what material is used, the rules of this game make no difference, do they? ”

"Hmm...... Then buy a pair of bamboo mahjong. ”

The couple Terry and Lucy discussed for a while and finally purchased a $45 bamboo mahjong.

The consumer psychology of Americans is a bit interesting. Li Kangping spent the whole morning at Macy's, then went out for a light lunch, and he entered Macy's again at 2 p.m. to find a "Ivory Mahjong sold out" sign on the mahjong counter.

Bamboo mahjong is still in stock, and customers who can't buy ivory mahjong can only buy bamboo mahjong.

Obviously, Ivory Mahjong is more profitable. The rarity of raw materials is different, and Li's father only got 60 pairs of ivory mahjong in China. This is also a helpless thing, after all, the Li family in Guangzhou does not do mahjong manufacturing, this single 400 pairs of mahjong foreign trade business, Guangzhou Li family to put it bluntly is a middleman who goes back and forth, plays the time difference, and earns the difference.

"Hey, inventor, you're here!"

A familiar male voice sounded, he was Li Kangping's old friend, the red-haired jack of the furniture company.

"Jack, do you come to Macy's every day?" Li Kangping asked.

"I occasionally come to see our company's couch counter at Macy's." Jack looked at the mahjong counter that was in short supply, and he said greedily: "The mahjong business is really good!" Ivory mahjong costs $500 a pair, which is equivalent to a top sofa in our company! I inquired, this mahjong counter is directly operated by Macy's. ”

"Oh, really?"

"Li, you know, the United States does not produce mahjong, all the mahjong in the United States comes from China. Taking into account the shipping cycle, that is, Macy's already bought mahjong in China and sent it to the United States in February and even January. ”

"Huh?"

"Jews are always one step ahead of others in business."

"So Jack, did you buy mahjong in China? I remember you once saying that, at a party on Long Island. ”

"Oh, it's a trade secret." Jack smiled slyly, noncommittal.

"Jack, it's time for me to go, goodbye."

"Lee, you don't seem to have bought anything, and as far as I know, you don't have a counter at Macy's, so what are you doing here?"

Li Kangping pointed to the top of his head: "I'm going to buy something, I should go to the second floor, I need a suit." ”

"Oh, like this, goodbye."

Li Kangping said goodbye to Jack, went up to the second floor for a walk, didn't buy anything, and left.

After researching the business district throughout the day, Li Kangping did not see Macy's advertising for mahjong retail, store advertising, light board advertising, newspaper advertising, and no advertising at all.

The Macy's flagship store is located in Manhattan's bustling business district, with a high flow of customers. Among these customers were potential mahjong customers, who saw mahjong on sale at Macy's counters and rushed to buy it, creating a situation where mahjong was in short supply.

Li Kangping returned to the dormitory, set an alarm clock, and fell asleep.

In fact, he only slept for five hours, and at half past ten in the evening, Li Kangping got up, washed up, ate a baguette, drank a bottle of milk, and then went to the laboratory.

Professor Woodgate and Allen worked from 7 a.m. to 11 p.m., and regrettably, the silver pattern was not observed in the third experiment.

The electric furnace was constantly energized, and Li Kangping, who was keeping vigil, was alone in charge of the fourth experiment.

The experimental equipment in operation could not be fully inspected, and Li Kangping tried to find some clues from the paper articles.

"The two diaphragms and the two magnetic poles are all firmly connected to the brass box with a wall thickness of up to one centimeter, and any pressure ---on the electromagnet should theoretically not cause the deformation of the brass box, nor will it cause the relative position of the diaphragm, the magnetic poles and the glass plate to change."

"So what's the problem?"

"Could it be that the experimental design is wrong?"

"No, I'm not mistaken, it's this equipment."

Li Kangping calculated and drew in the notebook, went to the equipment to observe the situation, and then continued to calculate, draw, and continue to observe.

The morning light poured into the laboratory, and Professor Woodgate and Allen stepped on the morning light.

From eleven o'clock last night to seven o'clock in the morning, more than seven hours is not enough time to make the silver layer visible. Li Kangping made the handover, and then left the laboratory.

Five or six hours of sleep a day is enough for young people under the age of 21. Li Kangping likes to work the night shift, and he can move freely during the day.

Li Kangping had breakfast, drank a cup of coffee, went to the classroom for a German lesson, and then drove to the business district and then to Macy's.

Within 24 hours, all 400 mahjong pairs retailed by Macy's were sold out. Li Kangping found Samuel, the manager of Macy's and Jewish.

"Samuel, maybe we can work together for a long time." Li Kangping said bluntly.

Samuel kept a gentleman's smile: "Sorry, Mr. Lee, maybe we can't continue to work together." In fact, a commercial representative from Macy's San Francisco has boarded the ship in San Francisco. ”

Samuel's words were subtle, and Li Kangping said secretly, damn it, it's a trick!