When most people see Kidd's teaser letter, they will focus on the sentence that the multiplication of 20 and 3 equals 4, thinking that only after cracking this sentence can the secret of the teaser letter be completely solved.

But Barbara has a different set of opinions.

When you can't think of the meaning of twenty times three equals four, it means that there is a layer of mystery hidden in the sentence itself.

In other words, it doesn't matter if the multiplication of 20 and 3 equals 4, what matters is what the numbers "20", "3" and "4" actually represent. What does the word "multiply" mean?

Barbara focused on the third and fourth sentences of the teaser letter.

"Mars and Julius Caesar, one is the god of war in Roman mythology, the other is the founder of the Roman Empire...... Rome...... Rome...... Rome ......"

After pondering for a long time, Barbara suddenly remembered the book "Introduction to Greco-Roman Polytheistic Studies" in the religious section of the library.

and Dean Suston, who last came to the library to read a book.

"Could it be a coincidence?"

Barbara thought suspiciously, "I didn't think there was anything wrong with the last time I met him, but now that I think about it, why would a young magic genius be interested in the study of Greco-Roman religion?" ”

The more she thought about it, the more she felt that something was wrong, and Barbara stared at it, and set off to the bookshelf where she had met Dean earlier, and took out the research introduction and flipped through it.

However, after a cursory glance, apart from the deeds and information of the Roman god of war Mars, Barbara did not find any clues in the book to unravel the teaser letter.

"It seems that my nerves are too sensitive, and he can't ......"

Barbara laughed self-deprecatingly and put the book back in her hand.

"Huh?"

Just then, out of the corner of her eye, Barbara caught eye on another book on the shelf.

The Negative Influence of the Church on Cultural Development in Europe

-----------------

March 1st, the first day of the Dragon Egg Ruby Necklace Exhibition.

Exhibition Location, Gotham Museum of Natural History.

It is the largest museum in the city, consisting of thirteen end-to-end pavilions, each with five floors and dozens of large exhibition halls.

Mrs. Chandler's necklace is placed on the top floor of the central heritage gallery.

Today, there are many visitors to the museum, and the flow of visitors, which used to be almost overwhelming, is now only two hours after the museum opens, and it is already showing the momentum of crowds.

I don't know if it's because the 'Dragon Egg Ruby Necklace' is so famous, and people want to see what it looks like with their own eyes, or if it's to see how the thief Kidd stole the necklace.

More than 200 plainclothes police officers from the GCPD are closely guarding the perimeter of the exhibition hall, constantly monitoring every visitor who comes here.

Inside the exhibition hall, there are nearly 100 police officers distributed in various locations on the five floors, and this battle seems to be quite strong, so that people who come to visit the cultural relics exhibition hall do not consciously take the initiative to obey the order.

In addition to the most important conservation site, the other exhibition halls also have a varying number of police officers, who can be used as mobile units to provide timely support if necessary.

This time, the GCPD mobilized several times more people than before, but Gordon still felt that it was not enough to be safe, so he temporarily transferred two police helicopters to patrol the sky above the museum.

If Kidd the Monster Thief wants to surprise with a glider, the air currents whipped up by the helicopter propellers will teach him how to behave.

However, this time, the police did not use face pinching to verify whether the tourist was pretended to be by the monster thief Kidd.

Since the entire exhibition would last fifteen days, they couldn't be sure when Kidd the Monster Thief would sneak in.

If you see a tourist every day for fifteen days in a row and go over and pinch that person's face, it will inevitably cause dissatisfaction among the masses.

One is not handled well, and a conflict may even erupt.

This is definitely not the situation Gordon wants to see.

As a result, the police had to work surveillance.

At this moment, a young and beautiful red-haired girl walked into the door of the Natural History Museum.

Upon entering the square, she saw a familiar figure wearing a cowboy hat, leading a patrol.

"Hey! Harvey. ”

Barbara took the initiative to walk over and greet Bullock.

"Oh hi, Barbara! Have you come to visit your Uncle Bullock? ”

Hearing Barbara's voice, Bullock turned around and smiled happily, he and Gordon have known each other for many years, and they can be regarded as growing up watching Barbara grow up with their own eyes.

For some reason, Bullock, who is still alone, may have regarded Barbara as his child for a long time in his heart.

"I'd love to make you laugh and say yes, but I'm sorry, no, I'm here for one purpose, to see Kidd the Monster Thief."

Barbara said mischievously.

"Shh

I saw that Bullock suddenly made a silent gesture to her, and said with an exaggerated expression: "Be careful, don't let your father hear what you just said, he is now hating the thief Kidd so much that his teeth are itching." ”

"Don't worry, Uncle Bullock, of course I know how much my dad hates Kidd the thief, and I suspect he would have criticized Kidd all night long if he wasn't afraid of being complained about being complained about disturbing people late at night."

Barbara sighed.

"Anyway, I'm going to visit the exhibition to see what the monster thief Kidd wants to steal looks like, so I won't bother you to continue patrolling."

After separating from Bullock and the others, the mischievous and cute smile on Barbara's face disappeared in an instant, replaced by seriousness and seriousness.

She calmly took out a headset and put it on, and then a slightly urgent voice came.

"Did you enter the museum?"

"Obviously, yes."

At the same time, in the fourth year of Gotham High School, in the last row by the window, Dick also wears a headset in his ear.

It was he who was on a remote call with Barbara, and still in class.

Gotham's private high schools are liberal and do not explicitly prohibit students from using electronic devices, and it is not uncommon to wear headphones, mobile phones, tablets, or even laptops to class, as long as students themselves believe that the use of these items will improve their learning efficiency.

However, the premise is that when you get up to answer the question, you can answer it accurately instead of not knowing it, otherwise it is a bad learning attitude and the electronic devices used will be confiscated in court.

As a result, Dick is inconspicuous in the classroom with headphones on.

Dick kept his voice low enough for Barbara and himself to hear, but no one around him could hear him.

Even Dean, who was sitting in front of him, couldn't hear him with his ears.

But interestingly, Dean also wears a headset on his left ear......

(It suddenly occurred to me that we could play an interactive game, if there is a book friend who can solve the full teaser before the release of the mystery chapter, I will add three more chapters, this game is permanent and can be carried out until the end of the book)