As soon as Zhao Da said this, the three of them suddenly remembered that Song Nian saw someone in Guojiabao on the road.

"Is it an oil lamp on the wall?" Song Nian immediately asked.

"It's not...... It was in the lobby, and there was no light in this position, so I went into the lobby by the way, ready to light the light, and hurriedly came out when I heard Lord Song shouting. Zhao Da said honestly.

"Let's go, let's go!" Song Nian immediately took out a handkerchief, casually wiped the blood and mud on his legs, and walked towards the lobby.

The lobby of this Guojiabao is built extremely high, with three zhang, but the entrance is very short, less than one zhang, and the inside is spacious, but it always gives people a cold feeling.

Song Nian didn't quite understand why Guo Jiabao would choose such an architectural style.

But the immediate priority is not this, but to see if the lamp has really been lit.

The room was dark, but the oil lamp was huge, two bowls in size, and the lamp was bright and flickering oil, which fluctuated in the night.

Song Nian reached out and touched the wick: "It's hot, it's been lit, and it's ......"

Song Nian twisted the thick carbonized wick on his fingers: "And it took a lot of time." ”

This meant that before the trio arrived, someone else had infiltrated the castle.

"Lord Chu, my subordinates are worried, aren't they coming at you? Why don't we withdraw first, and then bring the Black Armor Army over to investigate the case. Song Nian asked in a low voice.

Chu He said lightly: "It's okay, this little case doesn't need to be mobilized by the Black Armor Army." ”

Zhao Da even lit the oil lamp with a fire fold, and said: "Hehe, why are my adults afraid of such villains......

Zhao Da's words came to an abrupt end.

Because the oil lamps are lit, this room is brightened.

On the ground beneath the huge copper oil lamp, a small earthen bag was piled up with three incense sticks that had long been extinguished.

There are people who worship here.

Song Nian suddenly felt a soft sound above his head.

Looking up, above my head, there were countless wooden signs, gently colliding with each other.

"Someone!" With Song Nian's exclamation, Chu He and Zhao Da pounced into the sky at the same time, submerging into the gloomy beams of the Guo family's lobby.

A moment later.

With a violent coughing sound, Chu He and Zhao Da jumped down one after another.

"Lord Song, there is no one on it, Lord Chu and I checked it, there is dust all over it, and there are no footprints at all." Zhao Da explained, then clenched his fists and retreated.

Song Nian smiled awkwardly: "I saw those wooden signs shaking around, and I thought there were people ...... above my head."

Chu He coughed, as if choked on the dust on the roof, and then said: "The collision of the wooden plaques was caused by the night wind, although it was dark on it, but when the Guo family built it, it was also ventilated. ”

Song Nian suddenly realized, no wonder these wooden cards would hit each other.

Then, Chu He smiled and handed Song Nian a wooden card: "It's not all for nothing." ”

Song Nian took it and took a look. This wooden plaque has "fifty catties" written in red lacquer on the front, but a scimitar is painted on the back with black lacquer.

"This is ......" Song Nian was a little incomprehensible.

"This should be something that Guojiabao uses to trade, and if you hold this thing, you can come to Guojiabao to exchange it for fifty catties." Chu He explained.

"Fifty pounds? What is it? ”

"Well, you also know that the Guo family is 'tax-collecting', so maybe this brand means that with this card, you can exempt fifty catties of goods from 'tax'." As soon as Chu He explained this, Song Nian suddenly realized that he was worthy of being a member of the three grades, a royal nobleman, and he knew a lot.

"So, the signs above your head are all like this?" Song Nian asked?

Chu He shook his head: "The brands on it, some are long swords and spears, some are dry tobacco sticks, and some are mansions, all of them are different, only this one...... It fell on the beams of the house. ”

Song Nian nodded and put away the wooden card.

It seems that there is something special about this wooden sign.

As for the incense and candles on the ground, it is believed that someone came to worship them.

It's just that who would travel hundreds of miles of saline-alkali land alone and come to Guojiabao to worship?

The three of them looked around the castle again, but found nothing but some tattered cotton wool.

In a few months, an ancient castle that had cost countless money to build turned into a barren grassland.

The only catch was to find five or six black pots with broken bottoms in the backyard, as well as a few strange rusty iron utensils and broken clay pots, which were exposed to the wind and rain, and it was long lost to see what they were originally used for.

The three of them returned to the lobby, which was the most lit place.

As soon as he returned here, Song Nian couldn't help but shudder.

It's not that she found anything terrifying, it's that she really feels cold.

"This room is indeed much colder, perhaps because it has not seen the light of day for a long time. Let's go outside for a walk and warm up. Chu He took the initiative to say.

Song Nian nodded, indeed, the investigation of the case is important, and the body can't be tossed.

Zhao Da followed behind, and Chu He accompanied Song Nian and walked up to the wall.

From the top of the wall, the view is extremely open, and it is easy to overlook the river valley below.

In the river valley, there are mounds of graves, scattered and orderly, arranged neatly.

In the moonlight, these mounds, like pyramids, are neat and tidy, and the faint light shining in the moonlight has a different kind of beauty.

Song Nian looked at this scene and was slightly distracted.

"Why, I think of the people who died in Guojiabao." Chu He whispered on the side.

"Look, Chu River...... How can there be a point of light shining on these mounds? Song Nian pointed to the mounds in the river valley below.

The periphery of the mound seemed to be covered with a white light.

"Isn't it a reflection of the moonlight?" Chu He didn't care, after all, Song Nian was surprised too many times tonight.

"No...... Soil does not reflect moonlight. Song Nian had a faint thought in his heart: "I want to go down and have a look." ”

Walk down the hill and come to the first tomb.

Song Nian took a closer look, and sure enough, this tomb was faintly shining in the moonlight.

She reached out and pinched a point of light, twisted it, slightly astringent, and slightly pricked.

Licked again, salty.

"This soil is salty." The thoughts in Song Nian's heart faintly jumped out.

"Salty? It's all saline, so it's not surprising. Zhao Da was puzzled.

Chu He was suddenly stunned: "You mean, salty, not bitter?" ”

Song Nian smiled: "Yes, salty, not bitter." ”

Chu He also dug out a piece of soil and licked it gently.

Salty, not bitter.

"So, you mean ......"

Song Nian looked at the endless "tombs" in front of him: "Yes, I mean, this is a treasure ......"

"The real source of wealth of Guojiabao made the Guo family invest heavily in building the fortress, not for any 'tax collection', but to 'tax collection' to cover up their real secrets here."