The Informal Tomb Raiding Diary: She is the occupant of the tomb!-Chapter 391 - 308: Wuwu Sets Off

I asked, "24 hours in a day? 60 minutes in an hour? 60 seconds in a minute? One second... counts as one number?"

From such a distant era, I pondered their method of time calculation, which might differ somewhat from ours now.

I showed my watch to Little Red, explaining how long it takes for the second hand and hour hand to complete a circle.

Hoping it has the capability to record and compare time, so at least we can know when the Ancient City existed.

Little Red blinked, and if you looked closely, you could see its pupils slightly contracting and dilating. I wasn’t sure what its eyes had to do with time planning, maybe the camera was linked to the CPU.

After a brief calculation, Little Red told me their time units were similar to ours, but a year only had 260 days.

Hearing the term 260 days, I felt a bit of familiarity, and it added that a year had 13 months.

This calculation method sounded even more familiar; it was once used by a certain ethnic group in human history.

This ethnic group can no longer be traced, but archaeological discoveries revealed their time calculation mode, 260 days a year, continually combining cycles of 20 deity images and numbers from 1 to 13.

It’s said that this ethnic group had a very mysterious civilization; some even believe they were taught knowledge by an alien civilization.

The reference for their time cycles was said to be a mysterious star that can no longer be found, as per their records, this star revolved around the sun in 260 days.

Could it be...

Looking at Little Red, using the time calculation it reported, the Ancient City existed at least ten thousand years ago, much earlier than the once-glorious ethnic group in human history.

Could there be some connection between the two civilizations?

"By the way, what disaster did your culture, your country experience? Was it an earthquake?"

I heard of a relic that sunk with an earthquake and, thousands of years later, was pushed back to the surface due to crustal movement.

The Ancient City might have re-emerged this way, we probably overthought it before; the truth could be far simpler than we imagined.

Little Red nodded: "Yes, an earthquake."

I asked, "Did everyone manage to get out?"

It nodded, then shook its head: "Some did."

It seems some people managed to escape, and as long as some escaped, there’s a chance to rebuild the nation.

On the way back, I asked Little Red many questions, and it answered almost everything.

I asked about ’contamination.’ If it was just an earthquake, this area shouldn’t be rumored as a contaminated zone; perhaps some toxic substance leaked during the earthquake.

This time, Little Red didn’t ’operate’ but shook its head directly, saying it didn’t know. It was only responsible for taking care of patients and only knew about patients’ conditions; it didn’t know about other things.

Robots don’t usually gather gossip either; silently executing programmed tasks is their norm.

But Little Red’s learning capabilities are astonishing; I think it could completely upgrade itself to be ’human.’

Perhaps being trapped in this underground ward, it has no objects to mimic and learn from. When it first met me, it was a bit dazed, but now it seems more natural.

We returned to Scorpion Cave, and Qinghan suggested I first check on Doctor Du’s group. If they’re not suitable to re-enter and carry out the mission underground, they could stay in the cave and wait for our return.

Doctor Du and Wang Le had already baked in the sun at the cave entrance, warming themselves up. Hearing Qinghan’s intention for them to rest, they immediately stated that they could continue the mission.

We brought equipment and food, collectively diving back down, passing through two pathways, and reached the underground station to reunite with Qinghan and Mike.

While passing through Amber Hall, I saw that shadow again; it was standing by the door, but of course, it was imprinted on the door’s wall. Each time I saw it, it was imprinted on the wall; it seemed unable to leave the wall.

I casually knocked on the wall, it was solid without layers.

People can’t hide in walls and move; I still didn’t bring this up to Doctor Du’s group. When we all reunited, Wang Le and Huang Zaijiang looked at the underground tracks and small train with undeniable astonishment, but the two managed their expressions fairly well.

During my absence, Mike continued his research on why the small train could still run.

He was very curious about the fuel and power; he found the fuel tank, which contained only one stone. When the small train started, the stone began to mildly heat up, like a phone battery.