Xiao Lou took the wooden box and took a look. This number puzzle was not a nine-square grid. The entire puzzle was 6x6 with a total of 36 grids. 24 of them had already been filled in with numbers, leaving 12 blanks. There was no pattern in the filled in numbers.

, horizontal and vertical addition and subtraction will not work, and you will not get the answer by following the Sudoku method of 1-9.

Xiao Lou looked at the puzzle and thought carefully. Since it was a gift from the husband to his wife, the 12 vacant numbers were probably related to his wife. He looked at Shirley's overseas performance schedule this month, and then looked at the globe on the table.

.

Xiao Lou's eyes suddenly lit up: "Liu Qiao, find the places where Shirley performed on the globe!"

Liu Qiao happened to be standing next to the globe. When he heard this, he immediately rotated the globe and found Tokyo, Japan, Oslo, Norway, and Frankfurt, Germany.

Xiao Loudao: "Check the longitude and latitude of these cities."

Liu Qiao looked at the globe and quickly found the result, saying: "Tokyo, Japan, is 35 degrees north latitude, 139 degrees east longitude, Oslo, Norway, is 59 degrees north latitude, 10 degrees east longitude, Frankfurt, Germany is 50 degrees north latitude, 8 degrees east longitude...

"

Xiao Lou filled in the latitudes of the three places, 35, 59, and 50, into the six spaces in the first row, and then filled in the longitude numbers of the three places, 139108, into the remaining puzzle spaces.

Sure enough, there was a soft "pop" sound in my ears, and the mezzanine of the mechanism box was opened.

Ye Qi couldn't help but sigh: "The globe is used to check longitude and latitude!" When he saw the globe just now, he was still thinking, should he have to turn it a few times to unlock it?

Xiao Lou saw the detailed place names on the hostess's performance schedule, and there happened to be a globe on the table, so he thought that the longitude and latitude of the city probably corresponded to the number puzzle. This kind of "connection thinking" is very important in escape room games.

One of the techniques.

Under the interlayer of the box, there is a sapphire necklace and a greeting card.

The greeting card says——

"Dear Shirley, we have been married for ten years. You have been very busy these years, often traveling around the world to perform. My company is also very busy, and we can't always spare much time to spend with each other. But please, please

Believe that no matter where you go, my heart will be with you.

After this year’s Christmas, let’s all take some time off, shall we?

Taking my baby daughter to travel around the world. I think this is the best gift for Lucia."

After Xiao Lou read this section of the greeting card, he looked at Yu Hanjiang: "This family is very rich. The male owner is a company boss and the female owner is a pianist. They live in a luxurious villa, but they are too busy and have no time to spend with their daughter.

During my daughter's illness, she was always cared for by a nanny and a family doctor."

Yu Hanjiang nodded: "The master's original plan was for the whole family to travel around the world together after Christmas, so he invited many people to his home for a party on Christmas Eve. But he didn't expect that this Christmas Eve would actually turn into a place of death.

night."
Chapter completed!