The incubation period of the pigeon is generally about 17 days, plus about 40 days of juvenile period, so it takes about two months from birth to be able to live alone, plus the time of training, it can be said that it is impossible to breed a new generation of special carrier pigeons without three or five months.

And this thing is still recognized as the place of birth, the pigeon born and hatched in Chang'an, you just take it to the village ten miles outside the city to train, it is also in vain, and you can't find a home at all.

This has resulted in a very fucked up result, there must be enough pigeons to be cultivated independently in various places, otherwise everything else is bullshit except for being able to deliver a message to Chang'an.

These are all practical problems that Li Chengqian needs to face, and many of them are hard indicators, just like no matter how anxious Li Chengqian is, it is impossible to change the two-month infancy period.

"Boy, it's been a lot of fun this time." will be a prisoner, Cheng biting Jin Dama Jin sat at the door, like a door god, his huge eyes stared at Li Chengqian, looking like he was going to eat people.

"Uncle Cheng, which one is this? What do you do in front of the prison gate? Li Chengqian saw that Lao Cheng's eyebrows were covered with hoarfrost, and it was obvious that he had been here for a short time, so he couldn't help but ask with some curiosity.

"Hey, if Lao Cheng doesn't stay here, I'm afraid he won't be able to finish transforming the bed crossbow of the right martial guard during the Dragon Boat Festival." Cheng Yanjin sneered and glanced at Li Chengqian.

"Oh?" Li Chengqian blinked suspiciously, and quickly figured out what Lao Cheng meant, daring to love that this product came to wait in line to transform the bed crossbow: "Uncle Cheng doesn't have to be like this, right?" How are you going to work as a prisoner? ”

"The old man sits outside the door, it does not affect their work, if you want the old man to leave, you must first change the old man's ordnance, otherwise they will be in the prison on this Chinese New Year's Eve." Cheng Yanjin is not a reasonable person at all, his eyes rolled, and half of the prisoners could hear the gong-like voice shouting.

In the face of such an old Cheng, what can Li Chengqian say? In addition to shaking his head with a wry smile, he could only sigh that the craftsmen who were going to be imprisoned were suffering.

"Boy, your right guard rate is very crazy, the old man has heard a lot of news from them during this time." Cheng Yanjin didn't seem to want to talk to Li Chengqian more on the issue of blocking the door, so he directly diverted the topic.

"They are soldiers, how can they do without some arrogance." Li Chengqian smiled faintly.

Plausible modern military training has been going on for a year and a half, and a group of former ruffians have now become like wolf cubs, full of unruliness.

"You're right, a soldier can't be proud of himself." Cheng Biting Jin pouted: "But...... It's your right guard rate that I'm afraid I won't be able to keep. ”

"Why?" Li Chengqian was stunned and asked.

"Why? It's because of their arrogance. Cheng Yanjin stood up on the chair and moved his body: "Your subordinate Xue Rengui is a talent, this soldier is well trained, but do you know how many people are worried about him and your right guard now?" ”

"Uncle Cheng is ......" Li Chengqian had a faint premonition in his heart.

"You guessed it right, your right guard rate was favored by the generals of the Sixteenth Guard." Cheng Yanjin smiled evilly: "More than a year ago, they were just in vain, so although those old horsemen were surprised, they didn't really take it to heart. But now it's different, those cubs already have wolf nature in their eyes, and your right guard rate has now been thoroughly trained. ”

"......" Li Chengqian looked at Lao Cheng speechlessly, and a worried heart slowly put back into his stomach.

Damn Cheng Lao, he had to say half and half when he spoke, and Li Chengqian just thought that his right guard rate had aroused Lao Li's suspicion, but he didn't expect that he was so worried about dividing up his right guard rate.

"Why don't you speak? Do you regret exposing the strength of the right back rate this time? Lao Cheng's expression was as if he had already grasped the control of the right guard rate.

"Uncle Cheng, the full name of the right guard rate is the prince right guard rate." Li Chengqian said lightly and then kept silent, but the meaning of letting Lao Cheng die was already very clear.

Lao Cheng also smiled confidently, didn't continue the topic of the right guard rate, and asked instead: "Boy, what do you want to do when you catch so many Hu people?" ”

"Raising birds." Li Chengqian spread his hands.

"Caught more than 100 Hu people, just to raise birds?" Cheng Biting Jin's eyes widened instantly, and he stretched out a big finger: "You kid is getting more and more awesome!" ”

Since Lao Cheng didn't know about the pigeon, Li Chengqian naturally wouldn't say much to this old man, otherwise with the temperament of this old horseman, he was afraid that he would have to get involved again.

However, Lao Cheng's sentence of 'awesome' really reminded Li Chengqian of something: "Uncle Cheng, who is in charge of the army in Songzhou now?" ”

"What's wrong? What the hell are you kid thinking? A hint of suspicion flashed in Cheng Yanjin's eyes.

Li Chengqian changed his expression, and said with a winkled eyebrow: "How about we get some beef to eat together?" ”

"Boy, can you make it clear once, this old Cheng brain can't keep up." Cheng Yanjin really didn't know what Songzhou had to do with beef.

Li Chengqian compared a horn shape on his head with both hands and said, "Yak, Uncle Cheng knows, right?" ”

Of course, the yak Cheng Biting Jin knew that there was a kind of cattle unique to Tubo, which was covered with hair, and it could not be raised at all in other places except in the broken place of Tubo: "Little ancestor, if you have anything to say, please say it quickly, Lao Cheng is anxious, and he will make you sick in a hurry." ”

"The little nephew wants to exchange salt for the yaks of the Tibetan people." Li Chengqian didn't sell Guanzi either, and directly revealed the answer.

Cheng Yanjin glanced at Li Chengqian with disdain, and decided to give him a science popularization of yak knowledge: "You kid is stupid, right?" The yak will not survive at all when it goes down to Tibet, or it will die in a few days, and it will not be able to reach Chang'an at all. ”

"It doesn't matter if the yak can reach Chang'an or not, as long as the meat can arrive." Li Chengqian raised his eyebrows and began to doubt Lao Cheng's IQ.

If it weren't for the fact that Lao Cheng was a member of the military, and he was relatively lively, Li Chengqian would not want to discuss the issue of yak meat with him at all.

"The meat can't arrive, the climate in Shu is hot, and the meat is afraid that it will go bad before it is shipped out." Cheng Yanjin shook his head and denied Li Chengqian's plan.

Li Chengqian didn't care about Lao Cheng either, turned his head to Wang Chenghu and said, "Chenghu, take out the things and let General Youwuwei try them." ”

Taking the oil paper bag handed by Wang Chenghu, Cheng Fairy suddenly said: "It turns out that your kid has been prepared for a long time, and it seems that he specially ran here to block Lao Cheng, right?" ”

Li Chengqian said to the paper bag Nunu in Lao Cheng's hand: "Uncle Cheng will try the things in his hand first, and if you have anything to say, you will talk about it later." ”

"What is this?" Lao Cheng lowered his head curiously and opened the oiled paper bag in his hand.

"Beef jerky ......"