PS: Corrected later, about two o'clock.......................................................................................................................................................................................................................................................................................................................................... When the stalemate was in place, it was very advantageous for the Han army to defend the city, the Wu army was now trapped in grain and grass, and the time to fight was limited, after all, the expenditure of grain and grass for 200,000 horses was definitely not a small amount, although Lu Kang had ordered Zhu Wan to forcibly requisition grain and grass around Luoyang, but Liu Yin seemed to have made preparations in advance, and implemented the strong wall and cleared the field around Luoyang, and the people who could move away were moved. Pen, Fun, Pavilion www.biquge.info and this little bit of a drop in the bucket can't solve Wu Jun's urgent need at all.

Lu Kang is the commander, the pressure is very great, Sun Xin is responsible for the siege, he can focus on the siege, but for Lu Kang, all aspects of affairs need to be considered by him, the problem of grain and grass, the coordination with the Kwantung Army, and the problems of the Xingyang Han Army and the Luonan Han Army, these aspects are all things that Lu Kang needs to consider and deal with.

With the depletion of grain and grass, there is less and less time left for Lu Kang, there is no progress in the siege of the city, and the surrounding situation has become worse.

And on Luonan's side, there is no good news, although Sun Xiu has already gone north to Luyang, but whether he can hold back Luonan's hundreds of thousands of Han troops, Lu Kang has no bottom in his heart.

Sun Kai's plan to attack the city has long been reported to Lu Kang, although Lu Kang thinks that the tunnel siege is not very reliable, but in the current situation, the tunnel siege is also one of the few options, as for whether the surprise army can work in the end, Lu Kang is not sure, the current situation, can only be a dead horse as a live horse doctor.

Fortunately, now like the tunnel siege of this way of siege, the progress is quite smooth, than the current situation, the Han army did not perceive the actions of the Wu army and take effective measures, which is undoubtedly the biggest benefit for Sun Kai, now the Wu army has dug the tunnel to Luoyang under the city wall, as long as it holds on for another three or two days, the Wu army can attack Luoyang from the tunnel, launch a sneak attack.

In fact, the most difficult part of the tunnel has been dug in the past, and the most difficult section is how to dig under the moat, if you are not careful, it is likely to dig through the moat, so not only will the tunnel be abandoned, but the soldiers who are digging the tunnel will also be drowned in it.

Of course, this is a problem that Sun Kai must overcome, Luoyang's moat is connected to Luoshui, which is wide and deep, and when the tunnel is dug under the moat, it must be very careful. Sun Kai adopted the "U" shaped method, that is, when digging under the moat, he used a section that was dug down to avoid the water flow above.

Wu Jun's tunnel is not just digging out a passage so simple, first of all, this passage must be kept unobstructed, there can be no collapse and permeability, while digging forward, a large number of beams and columns must be used to support, such a tunnel is durable, even if a large army passes from here, it can also be supported.

Now that the Wu army has dug under the city wall, the most difficult section has been dug through, and the rest is to choose an exit in the city, and everything will be done.

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Liu Yin has also climbed the city walls in various parts of Luoyang to inspect the past few days, fill in the gaps, and see if there are any unfinished matters. Liu Yin naturally saw the tent of the Wu army not far from the eastern city wall.

It stands to reason that the camp of the Wu army would generally choose a place some distance from the city to be walled, so as to avoid a sudden attack by the army defending the city, thus disrupting the plan of the Wu army.

The other three sides are relatively normal, only the Wu army camp in the east is a little out of place, but Liu Yin didn't take it too seriously at first, after all, this kind of camping method is not unprecedented.

But Liu Yin soon discovered that after the siege of the city every day, when the Wu army retreated, they did not all enter these camps, but retreated to another large camp farther away, which made Liu Yin feel very strange, could it be that these camps were used for another purpose?

Thinking of this section, three words burst out of Liu Yin's mind: tunnel war!

In fact, as long as the siege reaches several months of fighting, there will be these means of digging tunnels to attack the city, but digging tunnels is an auxiliary siege method after all, is it possible that the Wu army will use this time-consuming and laborious method in just ten days of limited offensive time?

So Liu Yin ordered to dig a pit in the city for a few eyes, bury a huge urn, and let the soldiers hide in it. This method is the most effective means to deal with the tunnel siege, as long as the Wu army has some action, the soldiers who infiltrate the urn can hear some strange sounds, and according to the sound of the sound, further confirm the direction of the tunnel.

Sure enough, Liu Yin's suspicions were confirmed, and the Han soldiers listening in the urn could clearly hear the movement from underground.

Liu Yin, who got the exact news, did not take action immediately, but further monitored the movements of the Wu army to confirm the specific location of the Wu army's tunnels and exits, and made corresponding countermeasures.

The most effective way to deal with the tunnel siege is to attack with water, as long as the pool water or well water in the city is led into the tunnel, how many people in it are in vain, they will be drowned alive. After Liu Yin determined the location of the tunnel, he led the pond water in Luoyang City to the vicinity of the tunnel.

Finally, the soldiers listening in the urn couldn't hear any sound, and reported it to Liu Yin, and Liu Yin also understood that the Wu people's tunnel had been completed, and the Wu people might not dare to act during the day, and only at night, taking advantage of the weakness, would they launch an attack.

That night, Sun Kai personally led thousands of elite soldiers to enter the tunnels one after another, preparing to launch a surprise attack on Luoyang City in the middle of the night.

But at this time, the disaster suddenly fell from the sky, and the big water that came from nowhere suddenly poured into the tunnel, the water was surging, and the entire tunnel was filled with rat holes, and in the tunnels that were several miles long, countless Wu troops poured into it densely, and this time there was not even a chance to struggle for life, and the pool water poured down, and thousands of Wu soldiers were drowned alive in the tunnel.