The interference attack by the tunnel soldiers did not work, and Yuan Shao's troops did not panic, just because the more than 10 rams invested by Yang Rui did not pose a substantial threat, they just overwhelmed the city wall defenders during the exchange of fire. Both sides know very well that this kind of offense and defense is just an act of mutual consumption. It may have a certain impact on the morale of the troops on both sides, but it is absolutely difficult to shake the fundamental situation of offense and defense. The same is true for the previous harassment by Yang Rui's flying pet tribe. Under the vigilance of Yuan Shao's tribe, it is difficult to cause substantial sway to the opponent. In essence, the attack effect is not much different from that of charging a car. Of course, if these methods continue, there will always be a time when quantitative changes accumulate into qualitative changes, but then there is a high probability that it will become a protracted war, which Yang Rui cannot accept. At this time, Yang Rui had high hopes for Xu You's tunnel soldiers. While arranging for the flying pet troops and car rush troops to conduct regular raids, he personally came to the site where Xu You's tunnel troops were digging. The progress of the tunnel soldiers is still relatively fast. It has been some time since the temperature suddenly rose. The frozen soil is in a semi-thawing state, which is suitable for quick excavation. It will not be too hard or loose enough to collapse. Most of the day passed, and Xu You's tunnel soldiers had dug out a distance of one or two miles. Shortly after Yang Rui arrived at the scene, Xu You's tunnel soldiers also happened to pass on an important message that they had dug into Yuan Shao's tunnel. ! This is exciting news but also in line with Xu You's guess. Xu You's tunnel soldiers had taken this into account before they started. The tunnel was dug diagonally downwards, and the inner diameter was large enough. The purpose was to increase the diameter of the tunnel. The probability of intersection between Da and Yuan Shao tunnels. It's just that neither Xu You nor Yang Rui expected to dig out the Yuan Shao tunnel so quickly. For the sake of concealment, the entrance of the tunnel dug by Xu You's tunnel soldiers was 10 miles away from Lunu County. It's just a matter of digging a mile or two. It can be seen that Xu You was right to suggest that Yang Rui's troops retreat to avoid Yuan Shao's plot. When Yang Rui's troops failed to attack the city for the first time, they retreated 10 miles to the camp. Now it seems that if they do not continue to retreat, there will still be problems. Little dangerous. It is impossible to say when Yuan Shaochong came out of the tunnels inside and behind the camp. At that time, the situation that caused Yang Rui's troops to attack the city for the first time was light, or it might have been able to directly cause Yang Rui's troops to collapse. Yang Rui nodded slightly to Xu You to express his agreement with the previous suggestions. Although he was not prepared to indulge Xu You, he must still give what he should have. At the same time, Yang Rui discussed with Xu You and decided to temporarily stop digging the tunnel. At this time, Xu You's tunnel soldiers had just dug into the other side's tunnel, only breaking a small hole, and the other side had not discovered it yet. The two agreed to re-cover the dug hole with soil for the time being, then dig it out again at an opportunity, and enter the city along the tunnel to make a surprise attack on the other side, or hopefully open a breakthrough in one fell swoop. After Yang Rui got the news, he quickly hatched several plans in his mind. If the overlap of the tunnels could be used well, it would not be impossible to capture Lunu County in one fell swoop. Of course, it is difficult to achieve any results by just relying on breakthroughs from within the tunnels. Since Yuan Shao dug tunnels out of the city, it is impossible for the tunnel entrances in the city not to be strictly guarded. It is likely that one man can block the barrier and ten thousand people cannot open it. Therefore, in order to achieve something from the tunnel, we must also coordinate from within the city. At this time, tracing back to the 3,000 players in the city mentioned by Dragon Soul may come in handy. First of all, the first step is to determine the location of the exit of this tunnel in the city. Otherwise, it will be difficult for the players in the city to intervene in this matter. At least according to the news coming back so far, whether it is Yang Rui¡¯s investigation channels or information from large player organizations such as Dragon Soul. Channels, no tunnel entrance or exit was found in the city. In response to this, Yang Rui also thought of countermeasures, or he should send the ethereal secret ninja stealth unit into the tunnel in advance to find out what is going on inside, and at the same time explore the location of the tunnel exit, and notify the 3,000 players in advance. To prepare for collaboration. Under this premise, it is feasible to conduct a raid through the tunnel, but it is still not enough. After all, there is only one tunnel connected to it at this time. Even if Yang Rui's tribe successfully enters the city through the tunnel, they will not be able to get in much in a short time. , cannot play the role of internal response, at least there must be enough troops to open a city gate, right? Therefore, Yang Rui quickly thought of the brewing atmosphere. At that time, all means would be used to attack the city in an all-round way to divert the attention of Yuan Shao's defenders, or to buy a certain amount of time. "My lord, before our soldiers take action, please allow Xu You to inform the lord about the situation of the tunnels on both sides." When Yang Rui was contemplating attacking the city through the tunnels, Xu YouHe ordered the tunnel soldiers to block the breached area and said to Yang Rui. "Zi Yuan said he couldn't." At this time, Yang Rui also remembered that Xu You seemed to have some concerns before. After mentioning it, Yang Rui naturally wanted to give him a chance to speak, so as not to leave anything behind in the subsequent war. Hidden danger. "Lord, judging from the fact that Yuan Shao's tunnel troops were able to dig through the underground river, the rank of the soldiers in the opponent's tunnel troops has probably exceeded level 6 and reached level 7! Otherwise, even with level 6 tunnel soldiers, it would be difficult to connect them underground. The river can only be accomplished by chance, but the probability is not very high. Therefore, if the lord wants to attack Lunu County through the tunnel, our soldiers may not have the advantage to advance inside the tunnel. It may be very difficult, please let the lord know this in advance to avoid being passive." After Xu You thought about it for a while, he spoke up. But it turned out to be about the comparison of the strength of the tunnel soldiers on both sides. Xu You chose to speak out clearly about this even though he was stubborn, because it would largely affect the success or failure of the strategy, so it would be impossible not to say it. "Don't worry, Ziyuan. I have already considered this matter. I wonder if the soldiers of the Kongling Secret Ninja Department can take the lead in clearing out the tunnel soldiers of Yuan Shao's Department in the tunnel silently?" Yang Rui never thought that Xu You would do it. What I'm talking about is this matter, which is related to the comparison of the strength of the soldiers in Yuan Shao's tunnel military department. In fact, Yang Rui had no intention of relying solely on the tunnel soldiers from the beginning. Yuan Shao is the ancestor of the tunnel soldiers. Even the tunnel soldiers in Yang Rui's hands were only trained after capturing Xu You from Yuan Shao's camp. Yang Rui did not expect that only 50,000 level 5 tunnel soldiers could break into the city.