Xiao Lingyue said: "Verify whether the caravans have lied to me."

She stood up and looked at the topographic map carefully.

This kind of drawing was a valuable secret in ancient times, and ordinary people were not allowed to possess it. Once discovered, it would be a serious crime.

Therefore, Xiao Lingyue had to come to King Xiang to borrow.

The picture obtained by King Xiang was an official yard product, with the detailed terrain of the Log Town on it.

It includes the streets in the town, houses, piers outside the town, official roads, as well as all villages within fifty miles of surrounding areas, mountains and rivers, etc.

All the terrain was copied and drawn by living people after they were personally surveyed and copied.

Although it is not as accurate as modern satellite maps, the error will not be too large, which is enough for outsiders to understand.

Xiao Lingyue looked at the deep and shallow traces of charcoal brushes on the map, and after recording the general terrain, she took out another small terrain map from her body and placed it on the large map for comparison.

As you can see, the two pictures have completely different styles.

The small picture is even rougher, and at first glance it was painted by an outsider, and the lines are quite messy, far less detailed than the large picture.

However, the key terrain on the drawings, such as the location of the log town, the layout of the city, surrounding villages, mountains and rivers, etc., are completely consistent with almost no errors.

King Xiang was a little surprised: "Where did you come from this picture? Someone has hidden the topographic map privately?"

"This is what I got from the caravan leader."

Xiao Lingyue measured it with her fingers and sneered slightly, "The two pictures are exactly the same, but the proportion has been reduced. It should be that the previous county magistrate Li Bihuai secretly copied the topographic map in the government office and handed it over to the caravan."

Topographic maps are confidential and are not allowed to be taken out of the yamen.

In the entire county government office, only the county magistrate can see it. Even the chief clerk only knows that there is this thing, but he is not qualified to see it.

"What do they want to do with this kind of thing?" King Xiang looked puzzled.

"Of course it's for smuggling delivery."

Xiao Lingyue said, then took out a thin cloth from her arms and spread it on a small map.

The size of the thin cloth is exactly the same as the small map.

Xiao Lingyue pulled out the hairpin from her head, stabbed the pointed hairpin into the thin cloth, penetrated a small blood spot in the lower right corner of the thin cloth, and then let go of her hand.

It was placed on a small map under a thin cloth, and the hairpin was stabbed in a certain position.

Xiao Lingyue narrowed her eyes slightly.

It was a mountain.

King Xiang was confused: "What are you doing?"

Xiao Lingyue explained: "Because of the sudden death of 'Li Bihuai', Shi Lang Shen, as an imperial envoy, rushed to Yuanmu Town in advance, which aroused the tension and suspicion of the Nanyan caravan.

When I sneaked into Li's house last night, I overheard them planning to change the delivery time and location.

Afterwards, I followed two death soldiers to the back mountain and met the "deliveryman". Both sides exchanged an envelope.

The envelope states the time and location of the delivery change."

She pointed at the thin cloth penetrated by the hairpin: "The caravan gave only a piece of white paper in the envelope, and there was a dot of ink on the paper, without any writing.

I couldn't understand the content of the letter at that time, so I tore my skirt, cut the fabric to the same size as the letter paper, and then put a drop of blood on the same position.

Afterwards, I asked the leader of the caravan.

He said in person that he could just overlap the letter paper with the small map of Log Town.

The location of the blood spot is the delivery location this time.”

King Xiang: ""

He was stunned: "It's so secretive? Use white paper and ink dots to send messages. If the ignorant person sees this, he doesn't know what the delivery means, right?"
Chapter completed!