Chapter 347: Return to the Main World

October 19th, the eleventh day after the Mid-Autumn Festival and National Day holidays, and also the fifth day after Zhang Yanhang left the main world, at 11:59 p.m., hematite veins, small hematite ant nest Dala Ancient, peripheral area, C-shaped passage.

Zhang Yanhang stood in the depths of the C-shaped passage while staring at the time on the watch while waiting for the time pause to come.

When the time on the watch turned to 11:59:59, the familiar time pause really accurately appeared inside the small red iron ant nest Daragu. At the same time, a corresponding display appeared in front of Zhang Yanhang. The text option box, he immediately began to check the specific content of this option.

[Do you want to return to the main world? 】

[Option 1: Yes (the last time you came to the small red iron ant nest Daragu, after a simple exploration, you made a simple red iron ant nest cleaning plan according to the specific conditions inside it, this time you When I came to the small red iron ant nest Dalagu, I improved it again and prepared to strictly implement the plan.

Because it is the second time to enter the small red iron ant nest Dalagu, so you set yourself a simple small goal to clear the entire small red iron ant nest Dalagu at once. You made it easy, so now that you've accomplished your little goal, you feel like you should go home and take a break. )]

[Option 2: Go home (Originally, you thought that you should be able to empty out the entire small red iron ant nest by accurately executing your plan like the previous Raccoon City this time, but you didn’t expect that the plan could not keep up with the changes. Halfway through, the red iron queen suddenly summoned all the red iron ants together for no apparent reason.

The abnormal behavior of the red iron queen caused you to complete the plan ahead of time, which resulted in more time for you to dig the passage to the new area, and you have been working around the clock for the rest of the time but still haven't finished it The excavation of the channel, the transmission channel will be closed soon, you have no choice but to go home temporarily. )]

[Option 3: No (After spending a day emptying out the entire small red iron ant nest Daragu, you have devoted all your time to digging tunnels leading to the new area, and the tunnels are still far from the end You're almost done with a few kilometers of the tunnel and you really don't want to interrupt the tunneling here.

So, although you already knew the news that the transmission channel was about to be closed, you still chose to stay here and dig the tunnel leading to the new area, because you have been working non-stop for four days, and the remaining part of the tunnel will soon You, who have become extremely proficient in digging work, got through directly. )]

"I can finally go home, and two of the three options this time are asking me to go home. It seems that I should really go home and have a good rest. Although compared to going home, I In fact, I do have a little bit of desire to continue digging the tunnel, but if I think about it carefully, forget it.”

Calculated from the tick marks,

Zhang Yanhang had already dug 72 kilometers underground the last time. Logically speaking, he should have dug a distance of about 2 kilometers again after filling his pockets and storage boxes this time. Therefore, he had actually dug underground. A depth of about seventy-four kilometers.

The completion depth of the entire passage is 77 kilometers, so Zhang Yanhang has actually

The entire channel can be opened up by only the last 3,000 meters deep, but because of lack of time, he has no choice but to return to the C-shaped channel ahead of time.

Under normal circumstances, Zhang Yanhang actually only needed less than half an hour to dig through the remaining part of the tunnel, but this is just a normal situation. With the increase of the excavation depth, the overall excavation work is very fast. It became abnormal.

Specifically, due to the increase in depth, the density and quality of the raw red iron stones will increase as Zhang Yanhang digs down, and the speed at which Zhang Yanhang separates the raw red iron stone pillars will decrease due to the increase in the density and quality of the raw red iron stones.

After all, although alchemy is indeed quite versatile, it will inevitably lead to a decrease in melting speed when faced with higher-quality objects. To give a specific example, green-quality materials must melt slower than white-quality materials. , which is quite logical.

Because of the characteristics of the world of ashes, although the red iron rough stones tens of kilometers underground and the red iron rough stones at ordinary depths are gray-quality items that cannot be brought out, there is indeed some essential difference in strength between the two.

When excavating raw red iron stones at ordinary depths, Zhang Yanhang can use alchemy to advance a distance of two meters per second on average, which is four times faster than using fists.

But with the increase in depth, especially when the excavation depth reaches 70 kilometers underground, the speed of alchemy has become not as fast as the original fist, and it is more difficult to advance half a meter per second.

It is also for this reason that Zhang Yanhang has been digging the tunnel for four days without sleep, and the total depth has only been excavated to a depth of 74 kilometers. If the normal depth is calculated at a digging speed of two meters per second , he only needs more than a day to dig through the entire tunnel.

It must be mentioned that Zhang Yanhang actually dug to a depth of 70 kilometers underground at noon today, but it took him a full ten hours to dig the subsequent 4 kilometers. The difficulty of tunnel excavation can be said to be sudden increase.

Of course, Zhang Yanhang actually spent more time recovering the energy value than the digging time. He usually spent four and a half hours recovering the energy value for every two and a half hours of digging.

In addition, it takes an hour to climb the red iron chain, which led Zhang Yanhang to implement the eight-hour work system since he entered the depth of about 60 kilometers underground, that is, to complete a cycle every eight hours and start the next one immediately. Cycle, each cycle can allow Zhang Yanhang to advance a distance of about two thousand meters.

Calculated according to this speed, if Zhang Yanhang can omit the stage of energy value recovery next time he digs a tunnel in the small red iron ant nest Dalagu, then maybe he can complete the entire passage within the time when the transmission passage is opened. excavation.

After all, when the transmission channel is opened next time, the opening time should be advanced by half an hour again, and correspondingly, the maintenance time of the transmission channel will be increased to seven hours. If seven hours are simply used to dig the channel, it is indeed enough up.

"So, I choose option one and return to the main world." Zhang Yanhang made a choice immediately after checking the contents of the options.