Because he has a system in his body, and he already has the foundation for gunpowder manufacturing in his hands, Lu Rui arranged for some people to start researching ways to improve the lethality of gunpowder, and after such a long time of research, this explosive was finally developed. But so be! The lethality of this explosive is not much stronger, after all, the background of the times is limited here, and Lu Rui should not expect that he could build a bazooka or something during the Han Dynasty.

However, although the power of one is not large, but this thing is better than the number, if dozens or hundreds of them are tied together, the power is still very objective, therefore, it can still be regarded as a lethal weapon, and for this battle, Li Jing specially asked people to carry out fire treatment on the shell of the bomb, not to be able to burn it all the time, at least to increase the time when it is grilled by the fire without exploding, so that it can also give Yang Yansi enough time to evacuate.

After this battle, Li Da was almost completely annihilated, and after Cao Hong heard this violent noise, he also forcibly stopped his steps, after all, Cao Hong was not so stupid as to make such a big move and rushed to die.

"General, it's burning inside, do we want it?" A soldier came to Cao Hong and said to Cao Hong.

"What else are you going to do? To send to death? Forget it, this trip is in vain, Luoyang has suffered such a catastrophe again this time, I am afraid that it has become an ominous place in the hearts of the people of the world, so that his value is not as good as before, but it is okay, at least Li Ji's goal has been achieved, according to Li Ji, after this time, he will go back to Cao Gong with me, this Li Ji is the number one general under Li Shimin, the record is remarkable, after bringing it back, it will be a great achievement, okay, retreat! There is no value here, even if it is reduced to ashes, it will be cleaned by Li Jing, and it has nothing to do with us. After Cao Hong finished speaking, he waved his hand and retreated with the army.

"General, as you wish, Li Da is now buried in Li Jing's hands, our mission has been completed, is it now according to the original plan to go to Cao Hong for a round?" Gongsun Shu came to Li Ji's side and asked Li Ji.

"Well, it's time, let's go!" Li Ji nodded when he heard this, and said a word first, but after speaking, he did not act immediately, but faced the direction of the fire and bowed to the fire, and the soldiers behind Li Ji saw Li Ji's action, and they also followed Li Ji's example and bowed to the fire. After all, they are former comrades-in-arms, not that they can be completely put down if they are put down, they also have some feelings, and this worship can be regarded as a kind of farewell to them! It's just a difference in position, whether there is a deep hatred, and there is no need to do some things too absolutely.

After Gongsun Shu saw this scene, he thought about it, and bowed for a while, and after that, Li Ji and his party left.

"General Cao, according to the agreement, we are here, and please General Cao take us in as agreed." After Li Ji found Cao Hong, he said to Cao Hong.

"General Li's words are serious, with General Li's talent, Cao Gong will definitely reuse you, Cao Gong has never paid attention to birth, as long as you have the ability, you can be reused, now the general has gotten the news, it won't be long before you can rush back, when the time comes, the general will definitely recommend you to Cao Gong." Cao Hong looked at Li Ji and said to Li Ji.

"In this way, the last general will thank General Cao here first, and then when he meets the general, he will personally thank the general." Li Ji couldn't help but be overjoyed when he heard this, and immediately said to Cao Hong.

Now that a consensus has been reached, Li Ji is now considered to have joined Cao Cao's command, and after repairing it, he will retreat, and Li Jing's side has already made plans.

"Okay, General Yang Yanzhao, the affairs of Luoyang will be handed over to you, the two generals Yang Yansi and Jiang Song will also stay to assist you, the army sent by the lord before should almost arrive, and he can also help you restore the vitality of Luoyang as soon as possible, I will leave 70,000 horses and horses to you to lead, Jingzhou has just fought a battle before, I must go back." After the matter was over, Li Jing directly summoned everyone, according to the previous arrangement, Yang Yanzhao and the others stayed in Si Li to control Si Li as soon as possible, and he took people back to Jingzhou first, and went back to deal with those things in Jingzhou.

Leaving Yang Yanzhao and the others behind Li Jing is also after careful consideration, after all, only Yang Yanzhao is the only one who can be alone now, as for Yang Yansi and Jiang Song, they basically belong to the type with developed limbs and simple minds, and they are not competent, and Yang Yanzhao's subordinates now also need people with strong combat effectiveness, there is Lu Bu on the side of Jingzhou, and Yang Jizhou, who has been summoned recently, and the generals have enough guarantees, and if they transfer people from Jingzhou now, it will be too late in time, therefore, simply let Jiang Song stay and assist Yang Yanzhao.

"Please rest assured, the last general will not disappoint the Grand Governor." Yang Yanzhao nodded when he heard this, and said to Li Jing.

"In that case, then the matter here will be left to you." Li Jing nodded when he heard this, and after trimming it up, he also returned to Jingzhou with his own people.

Time flies, it has been a long time since Li Ji followed Cao Hong back to Bingzhou, after stabilizing the situation in the north, Cao Jingzong finally saw Li Ji, and after Li Ji saw Cao Jingzong, he said to Cao Jingzong: "The last general Li Ji has seen the general. ”

"Oh? Are you Li Ji? Cao Jingzong looked at Li Ji and asked Li Ji.

"It's the last general." Li Ji nodded when he heard this, and said to Cao Jingzong.

"Well, it's really a talent, I have also heard of your achievements under Li Shimin before, but when Li Shimin is now in a critical moment, you chose such a traitor to seek glory, how dare you trust you?" Cao Jingzong looked at Li Ji, and a lot of meaning had already been revealed in his tone.

"General, dare to ask me how I betrayed the prince of Shimin, and how did I help Li Jing fight against the prince of Shimin? I really don't know where to start with this traitor's pursuit of glory, and I hope that the general can give me some guidance. Li Jiyan's face did not change at all, although he had never fought against him, but what kind of person Cao Jingzong was Li Ji still had a little bit of a spectrum in his heart, so he said to Cao Jingzong with the same face.

"Hehe, Li Ji, how dare you talk to me like this? You have to find out, who is in charge here, aren't you afraid that I will kill you? Cao Jingzong couldn't help but smile when he heard this, he had already picked up a long sword in his hand, and asked Li Ji.

"In that case, why don't you do it now? It's just that Li Ji is dead, so it naturally doesn't matter, but if the recent events get out and the general can't get along with a person who has taken refuge in him, wouldn't this make the world laugh at the general's strength so small? I don't care about my life, but the general's own reputation can't be tarnished casually, and I ask the general to think twice before acting. Li Jiyan's face did not change at all, looked at Cao Jingzong, and said to Cao Jingzong.

After this sentence, Cao Jingzong didn't speak anymore, after glancing at Li Ji, he waved his hand and said to a few people next to him: "Take General Li down to be entertained, talents like General Li are really a little wronged under me, everything depends on how Cao Gong arranges!" ”

"Thank you, General." Since Cao Jingzong said these words, Li Ji knew that Cao Jingzong had passed this level, so after thanking him, he retreated.

Now that Cao Jingzong has spoken, Cao Cao naturally got the news faster, and when Cao Cao knew the specific things, he also thought about it a little and finally made a decision. Li Ji has just arrived, naturally it is impossible to be in a high position at the beginning, he can only be given a relatively high position relative to others, some things still have to be done step by step, and now Cao Jingzong needs to face Temujin's invasion, Li Ji just stays there to assist Cao Jingzong.