But the Wei spy who successfully penetrated into the gunpowder workshop was like a fish thorn stuck in Liu Yin's throat, and the stalk was in the throat, which was very uncomfortable. The existence of this spy is undoubtedly a huge threat to the gunpowder formula and production process, if it cannot be removed, there is always a risk of leakage, and the defection of the craftsman is undoubtedly a wake-up call for Liu Yin.

But in order to unearth the spy, it is necessary to determine his true identity. There are many craftsmen and guards in the gunpowder workshop, there are old people who have joined when the new workshop was built in Chengdu, and there are also new people recruited after arriving in Tianshui, whether old or new, everyone who enters the gunpowder workshop must go through strict scrutiny to ensure that they do not mix with the enemy's spies.

But Baimi will eventually be negligent, after all, those spies of the Wei State have great powers, and they can use fake identities to infiltrate the gunpowder workshop. In this way, the spies who infiltrated the workshop should have joined when Tianshui expanded the workshop, after all, when the gunpowder workshop was established in Chengdu, it was impossible for the Wei spies' eyes to be fixed there, and no one knew what Liu Yin was going to do after he built the workshop.

After arriving in Longxi, the situation became much more complicated, and the Wei people gradually knew and understood the power of gunpowder, and racked their brains and tried their best to get the formula of gunpowder, and the means were also exhausted.

It is currently impossible to tell whether the spy who infiltrated the Gunpowder Workshop belonged to the Artisan or to the guard, but it is clear from the fact that he was able to assist the Artisan in his escape, and it is clear that he was a Craftsman himself. The craftsmen in the gunpowder workshop were strictly controlled, especially at night. The craftsmen lost their freedom completely. It can only be confined to the area where it is active. The other said that he had escaped, and it was impossible to even leave his barracks.

Obviously, it is very likely that this spy will serve as a guard in the gunpowder workshop, and only the guard will have the opportunity and time to assist the craftsman in escaping.

"Why kill the defecting craftsman in the first place when there is no hope of escaping?" Liu Yin asked.

Turtledove said: "This is an order from the upper peak, if you can't escape, you must kill that craftsman as soon as possible." Because the craftsman knew the fine work that infiltrated the workshop, once the craftsman was caught, the true identity of the fine work would definitely be revealed. Therefore, Shangfeng ordered that it would be good if it was successfully brought out of Guanzhong, but once it failed, it was necessary to kill people first...... No, I didn't kill the person, he was killed by the Purple Eagle, and the Purple Eagle was the leader of our group, but at the time of the breakthrough. He was killed instantly. ”

Liu Yin frowned, this was almost the same as he imagined. After all, the defected craftsman knew the spy who infiltrated the gunpowder workshop, and the Wei Guojian Military Department would definitely spare no effort to protect this person, even if the defected craftsman died, as long as the spy who broke into the gunpowder workshop was safe and sound, they would have a chance to succeed again.

Now that the craftsman who knew the spy is dead, the only clue is broken, and it must be difficult to find the spy among the many craftsmen and guards.

Without digging out this spy, Liu Yin couldn't sleep well. "What's next? If that fails, what's the next task they've given you? ”

Turtledove shook his head again and said, "We are only a small military marquis, and we have no right to participate in relatively high-level plans, and many actions are only announced before departure, and sometimes there is no time at all. It was only announced last night's operation when it arrived at Chezhanggou, where the gunpowder workshop was located, and it was not known in advance. ”

Liu Yin is a black line at one end, this military secretary of the Wei State is really cautious to the extreme, and he has never left a chance. It seems that this turtledove is not a core member of the military division, and what he said can be determined by seven or eight points. It's just that the information he can provide is extremely limited, and it doesn't help much whether Liu Yin can solve this espionage case.

"Do you know who the supreme commander is in charge of this operation?" Liu Yin didn't hold out much hope, Turtledove was just a little minion with limited knowledge, maybe he didn't know who was the mastermind at all.

However, the turtledove said this time: "The little one also occasionally heard the purple eagle unintentionally say that this operation was the responsibility of Lord Bluebird." ”

Bluebird? Liu Yin gasped, this blue bird is really ghostly, from the time he crossed to the Three Kingdoms, he appeared in Qingcheng Mountain, and he accompanied him like a shadow along the way, from Shuzhong to Nanzhong, from Longxi to Chang'an, the blue bird is almost everywhere, but it can't be caught.

This guy is really an opponent of my fate! Liu Yin said secretly in his heart.

┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈

The night was dark, and darkness covered everything.

A black figure, ghostly, swept by, almost silently, startling several people who were whispering behind the ruins.

However, after they saw the clothes of the comers, they all bowed their hands in unison and said, "I have seen Lord Bluebird." ”

The blue bird was still dressed in black, covered with a black scarf, and except for a pair of eyes, the whole body was tightly wrapped. Blue Bird looked around at the few people present, all of whom were the brains of the Central Military Division, and said coldly: "Such a careful plan will actually fail, I really don't know what the use of asking you to do it?" ”

Several people said in fear: "My lord's forgiveness, this time I have already succeeded, but Liu Yin's personal guards acted extremely quickly, and in the end they fell short, but my lord rest assured, the red eagle is still in the gunpowder workshop, as long as there is a chance, we may continue to do it." ”

The blue bird sighed softly and said, "This time the grass startled the snake, so that Liu Yin had to be prepared, and if he wanted to start again, it would not be so easy." However, the imperial court has an order, and the formula process of gunpowder is imperative, so we must get the formula process of gunpowder at all costs. ”

One of them arched his hand forward and said, "Lord Bluebird, please rest assured, we will definitely live up to the expectations of the imperial court." Although the operation failed, we still have a backup plan, and we can now implement a backup plan. ”

The blue bird nodded and said: "Okay, the backup plan will be officially implemented from today, all in all, if you spare no effort, you must get the formula of gunpowder, and the imperial court can no longer afford such a failure as Chang'an." (To be continued.) )