Hearing Barbara's words, Dick's pupils shrank instantly.

"Listen to what you mean, have you already unraveled it?"

Dick asked anxiously.

"Do you think it would be meaningless for me to ask you if you hadn't solved it?"

Barbara smirked, "You must be struggling to unravel the teaser letter right now, and you can't wait to find out what's on it, right?" ”

"Don't whet my appetite, tell me!"

Dick hurriedly urged.

Seeing that he was in such a hurry, Barbara stopped selling the guanzi and said seriously: "Do you know Roman numerals? ”

"Roman numerals? Of course I do, but what does this have to do with Kidd's teaser letter? ”

Dick frowned and asked, "But even in the Roman way of counting, 20 times 3 doesn't equal 4." ”

"That's because the real values of the numbers '20', '3' and '4' are not what they seem, they may not be specific numbers, but a kind of ordinal number!"

"Serial number?"

Barbara reminded, "Do you remember the seven basic symbols of Roman numerals? ”

“I（1）、V（5）、X（10）、L（50）、C（100）、D（500）、 M（1000）…… Wait a minute! ”

When Dick recalled these seven symbols, a flash of inspiration flashed through his mind.

"If '20', '3' and '4' are considered to be Latin alphabet numbers, that means that they should be replaced with their corresponding letters and then replaced with Roman numerals...... Well? That's not right! ”

As soon as he was halfway through the deduction of inspiration, the joy on Dick's face suddenly froze, "If you interpret it according to the alphabet number, then 3 is C is equivalent to one hundred, 4 is D is equivalent to five hundred, but 20 is T, which is not in the basic symbol of Roman numerals." ”

Hearing this, Barbara's eyes flashed, and she said meaningfully.

"Polytheism based on Roman mythology has been gradually replaced by Christianity since the time of Constantine the Great, and has been reduced to the afterglow of ancient Rome.

"The numbers should be replaced with Roman numerals, and the letters should be replaced with the letters of the ancient Roman period!"

In ancient Rome, there were no J, U, and W letters!

In other words, the number 20 in the alphabet is not a 'T', but a 'V'!

Bring in Roman numerals, and the true meaning is the number 5.

20 times 3 equals 4, i.e. V times C equals D, and 5 times 100 equals 500, which is perfectly appropriate.

At this point, Dick's mind suddenly brightened, and his thoughts instantly came alive.

"If the multiplication of 20 by 3 equals 4,

Then I will visit at a time that does not exist,

When Mars spent the tenth day and night,

Following the guidance of Julius Caesar,

Come and receive the blood-stained dragon eggs. ”

"If the first sentence means Roman numerals, the non-existent time in the second sentence refers to zero, because there are no zeros in Roman numerals!"

Without Barbara's further explanation, Dick figured out the meaning of the latter sentence.

"Taken together, the time of Kidd the Strange Thief is 0:00 on March 11, that is, 12 o'clock at midnight on March 10!"

At this, Dick's brow furrowed again.

"And what is Julius Caesar's guidance?"

"I don't actually understand this sentence, if this sentence is just to guide us to put the idea of cracking the idea in ancient Rome related knowledge, it is a bit redundant, after all, mentioning Mars can also play the same role."

Dick nodded, and he felt that the sentence was more than just a hint.

"But—"

Barbara suddenly changed her mind.

"When I came to the Natural History Museum, I probably understood what he meant."

In the exhibition hall of ancient Rome, Barbara looked at a statue of Julius Caesar in front of her, and a glimmer of light flashed in her eyes.

This sculpture of Julius Caesar seems to be waving his hand at the enemy as he leads his army on an expedition.

If Barbara remembers correctly, the direction of the sculpture's finger should be the jungle pavilion on the east side of the cultural relics exhibition where the 'Dragon's Egg Ruby Necklace' is located.

"You mean, Julius Caesar's guidance is just a literal guide, and Kidd the Thief will be operating at the Jungle Pavilion at 12 a.m. on March 10th?"

After listening to Barbara's account, Dick asked suspiciously.

"I know, it's a bit too straightforward, but at least for now, this is the only one that makes sense, and I don't find any other 'Caesar the Great' here."

Barbara shook her head and sighed.

"Well, there doesn't seem to be another way to solve the puzzle anyway, anyway, the time will never be wrong."

After thinking about it for a long time, there was indeed only one explanation, and Dick nodded in agreement with Barbara's idea.

At this point, the two of them have even interpreted the entire content of Kidd's teaser letter.

After discussing some details of the next arrangement, Dick cut off the phone with Barbara.

At this moment, Dick suddenly heard someone calling out to him.

"Hey! Dick! Dick! Come back to your senses, Mrs. Anderson is looking for you! ”

I saw Dean in front of him whispering his name, while all the students in the class looked at him with gloating eyes.

Dick chuckled inwardly, and he realized in an instant that something was wrong.

"Looks like you've finally come to your senses, Mr. Grayson, I've called you four times, and you haven't reacted at all, I have to wonder if you're on the right track to learn......"

A deep middle-aged woman's voice sounded from the side.

Dick's face froze, and when he looked up, he met Mrs. Anderson's gloomy face.

Mrs. Anderson was their math teacher and not very good-tempered.

Dick secretly thought to himself, he was so focused with Barbara about the trailer that he didn't hear him named at all.

"Can you give me a reasonable explanation, Ger Ray Sen Ancestor?"

Mrs. Anderson asked word by word, her eyes full of oppression.

A cold sweat broke out on Dick's face, and he forced a smile and said, "Huh...... Mrs. Anderson, I ...... I was just listening to your lecture and was hooked, and until a few seconds ago I was immersed in the ocean of mathematical knowledge. ”

Mrs. Anderson stared into his eyes with a blank expression.

"You can only fool yourself, not anyone, I think I'll have to confiscate your headphones now, and the next time you get distracted, I'll have to talk to Mr. Wayne about your education."

With that, Mrs. Anderson snatched Dick's headphones off without saying a word, and turned back to the podium.