After eating a cheesesteak in the city center, which is said to be the most distinctive cheese steak in Philadelphia, Wu Bin and his party came to the hotel after the report of the organizing committee.

When lying on the bed, Wu Bin took out a letter from his schoolbag and read it, which Yingying sent to him from the welfare home, the content was very simple, that is, to thank Wu Bin for giving her a discharge gift, but all the words in the whole letter were learned by herself, so although the words were written a little crookedly, Wu Bin was still very happy to read it.

After putting the letter in his schoolbag, Wu Bin got out of bed, took out a pen and paper and wrote a reply, preparing to send it to her as soon as he returned to China.

"Wu Bin, Xu Xueba said that we would like to visit the campus, will you go?"

As soon as Wu Bin finished writing the letter, Zheng Wenhan ran to his room excitedly and asked.

As at the time of IPhO, the organizers assigned each team a translator and tour guide, and the Xu Xueba in Zheng Wenhan's mouth was the translator of their team.

Zheng Wenhan is also the elite of the sharp knife team selected by the University of Science and Technology, and it is definitely not a simple person who can be honored by him as a scholar.

This senior sister's name is Xu Hanshan, an undergraduate student in Jinghua, and now a graduate student at the Wharton School of Business.

It is the first university business school in the United States, known as the birthplace of the modern MBA, and enjoys a high reputation for research and education in various major economic professional fields, ranking first among the best business schools in the United States.

can study in graduate school in this kind of place, and there is naturally no need to say more about how high this Xu Hanshan's academic value is.

"Of course." Wu Bin put the envelope away and walked out of the room.

Soon after meeting in the hotel lobby, the three of them set off towards Penn under the leadership of Xu Hanshan.

"This is the Penn flag, do you know what the red and blue flag is?" In front of a building with a medieval architectural style, Xu Hanshan pointed to the flag fluttering in the wind and asked Wu Bin about them.

"Wait...... I would like to start by asking a question. Zheng Wenhan raised his hand as he looked around.

Xu Hanshan covered her mouth and smiled after hearing this, "Just ask directly, you don't need to raise your hand." ”

Zheng Wenhan put down his hand a little embarrassed, and then asked: "I wanted to ask when I came to report before, does Penn have no walls?" ”

"Well, not really." Xu Hanshan nodded, "Most universities in the United States are like this, external vehicles can drive directly into the college, and the entire campus is actually integrated with the city, and there is no clear boundary. ”

"Won't there be a problem with security?" Bao Jiasheng also asked curiously.

Xu Hanshan thought for a while and whispered: "Actually, when I first came, I was still a little scared, you must know that the proportion of blacks in Philadelphia has reached 50%."

"Wow...... No wonder I came all the way and saw so many Black Uncles. Zheng Wenhan suddenly realized.

"But then I found out that Penn has campus police patrols 24 hours a day, so I was a lot more relieved, but I still don't dare to go out at night, so I advise you not to run around." After speaking, he added in a low voice, "Don't panic too much if you really meet him, give him 20 US dollars and basically let you go." ”

Seeing the three of them nodding, Xu Hanshan smiled and raised a finger and said: "If you want to sightsee in Philadelphia, remember not to cross the river in the east, not to cross Penn in the west, not to cross 676 in the north, and not to cross South Street in the south, anyway, try not to go to those surrounding towns, the city center is still very safe." ”

After talking about this safety knowledge, Xu Hanshan said the question just now; "Well, can anyone answer me, what is the allusion to Penn's flag?"

Zheng Wenhan and Bo Jiasheng set their sights on Wu Bin.

"Look at what I'm doing, I haven't known about it." Wu Bin, who looked inexplicable, spread his hands and said.

"Looks like both of your teammates trust you." Xu Hanshan snickered, then pointed to the flag and said: "Legend has it that the military uniform that Washington wore when he was invited to the graduation ceremony was a blue tunic decorated with red embellishments, so these two colors were used to commemorate him later." ”

"Oh~" all three nodded at the same time.

The three of them then continued to walk inside, and soon saw a black statue.

"Huh? I feel like this one is a little familiar. Zheng Wenhan looked at the statue with his hand blocking the sunlight.

"Because the person on the 100-knife is him." Xu Hanshan answered this question with a smile.

"Oh~ so he's Franklin." Zheng Wenhan clapped his hands.

Xu Hanshan: "Yes, he is the first president of Penn, and people in the school like to call him Uncle Ben. ”

Zhang Wenhan: "I have a long knowledge. ”

Wu Bin silently walked to Franklin's statue and looked at the words engraved on it.

【At tenty years of age，the ill reigns，at thirty ，the it，and at forty，the judgment.】---Benjamin Franklin

"At twenty years of age it is the will that governs, at the age of thirty it is wit, and at forty it is ...... judgment"

Wu Bin, who read out softly, stretched out his hand and rubbed the words on it, feeling the philosophy of life of the leader of the War of Independence.

To say that Wu Bin first knew about this Franklin because the law of conservation of charge was first proposed by him, and he also invented the lightning rod, a well-known artifact.

In addition, he also coined professional terms such as positive electricity, negative electricity, electrical conductor, battery, charge, and discharge, and it can be said that he is definitely one of the pioneers in exploring electricity.

How respected is such a strange person in the United States? You have to know that the portrait on the dollar knife is Washington......

After visiting the statue, the group continued to walk inside, and on the way, Wu Bin found that Xu Hanshan was a very talkative and cheerful girl, and she enthusiastically introduced what she had seen and heard to them along the way, and also answered several of their various questions with humor.

The final stop for the four was the Van Pelt Library at the University of Pennsylvania.

"It's the largest of Penn's 15 libraries, with 4.8 million books." Xu Hanshan still introduced very enthusiastically.

"What is that statue? Buttons? Zheng Wenhan asked, pointing to a white statue opposite the library.

Xu Hanshan laughed after hearing this, "Yes, it's a button, the legend is that Uncle Ben became very fat over the years, and once even broke a shirt button, and the statue of Uncle Ben we saw before was missing a button on his clothes, and it fell here." ”

"This is very artistic......" Wu Bin, who didn't know how to complain, could only plan it into the scope of art that he couldn't understand, and then couldn't wait to walk into the library.

Elegant, dignified.

These are the two intuitive impressions of Wu Bin after entering the library, the books on the wall and the retro lighting give people a very comfortable feeling, but unfortunately he just came to visit, and there is no time for him to sit down and enjoy the reading time with peace of mind.

"Let's go eat, just take you to see the Penn cafeteria."

At five o'clock in the afternoon, Xu Hanshan saw that it was almost dinner time, so she proposed to the three of them.

The three of them had been shopping for so long, and they were indeed a little hungry, so they all agreed decisively.