[PS: I noticed that there is a reader who is crazy to brush this chapter and say, please stop such bad behavior, as long as each reader posts this chapter and says, Zhang Lao will be able to see it, no need to go crazy to brush, affect the reading experience of other readers, thank you for your cooperation! 】

For the next two hours, Zhang Qiuhan was in advent mode, controlling Lan Yu to frantically brush the surrounding strongholds.

Because these are all newly built maps, the number of players is not large, and all the nearby strongholds are basically contracted by Mr. Zhang alone. Moreover, Zhang Qiuhan also specially picked those level 5 strongholds that were difficult for Lan Yu, so Zhang Qiuhan's leveling speed could be said to be quite fast, and after two hours, a golden dragon on Lan Yu's body spiraled up, and he was successfully promoted to level 2.

"Elder Zhang, you've been brushing for so long, aren't your bones and muscles sore or painful?" Ling Huyuan, who had been following Zhang Qiuhan's side, couldn't help but ask for the tenth time.

"Fortunately, when the old man was young, he had such an amount of exercise almost every day, which was nothing!" Zhang Qiuhan played with a flower gun beautifully, and then touched Ling Huyuan's little face and said, "Little guy, I know as soon as I look at you, there must be a lack of exercise on weekdays, this is not good, and it is not good for your body, when you have your own heroic spirit, use the advent mode to fight, don't watch the play on the sidelines, understand?" ”

"I can't...... I'm sure I can't, I can't beat anyone, I'm not good at this! Ling Hu Yuan didn't think about it, and immediately instinctively refused.

"This can't help you, since you call the old man a grandfather, and you also received the old man's defense tower blueprints, then the old man has to ensure your health, understand?" Zhang Qiuhan knocked on Ling Huyuan's head, and Ling Huyuan could only nod helplessly.

Seeing Ling Huyuan's expression like eating bitter melon, Zhang Qiuhan immediately smiled and said, "That's it, didn't you just say that the old man is a martial arts master, then as long as you keep using the advent mode to fight and exercise your body, then the old man will teach you a set of swordsmanship." ”

"Really!" Ling Hu Yuan's expression suddenly became excited, and he nodded frantically vigorously, indicating that he would definitely use the advent mode to fight.

"By the way, the old man hasn't looked at the attributes that have been upgraded to level 2!"

After Zhang Qiuhan finished speaking, he re-called up Lan Yu's attribute table and took a look, and found that Lan Yu's health increased by 200 points, his physical attack increased by 20 points, and his three defense attributes also increased.

"Little guy, you said that if the old man goes to attack a lumber yard now, does he have the ability to take it?" Zhang Qiuhan glanced at the logging yard not far away, and asked Ling Huyuan with some curiosity and some excitement.

If Zhang Qiuhan can capture the lumber yard at this time, then he can harvest more than 1,000 units of timber.

And this new lumberyard is a newly brushed lumberyard, if it has not been attacked by other players before, then it can still provide a maximum of 10,000 points of wood, and the wood needed for the development of the village is basically enough.

"No possibility! Absolutely impossible! When Ling Hu Yuan heard this, he immediately shook his head frantically and said, "Elder Zhang, don't scare me, even if it is the lowest resource point like the lumber field, there are twenty or thirty level 5 Yuankou guards in it, if the player's village is not upgraded to level 10 or above, and has at least 5 heroic spirits above level 10, it is absolutely impossible to capture a lumber field!" ”

"Twenty or thirty level 5 Yuankou, okay, the old man give up!" Zhang Qiuhan shook his shoulder, if Zhang Lao is given a heroic spirit who plays with hot weapons, then Zhang Qiuhan still has the confidence to challenge it, but Lan Yu, forget it.

As the top science and technology on Mars, Zhang Qiuhan knew very well in his heart that with Lan Yu's current attribute value and his own martial arts skills, it was impossible to defeat the siege of twenty or thirty level 5 Yuankou.

"If that stupid girl also crosses over, maybe she will be able to lay down the lumberyard at level 2!" Zhang Qiuhan came up with He Yuyan's face for no reason, as well as the slender, agile, elastic, and long legs that can kick people dozens of meters away with one kick!

"Come on, old man, what do I want her to do! How could she have crossed over with me! Zhang Qiuhan snorted, cut off the unrealistic delusions, and then said to Ling Huyuan, "Let's go, you should have accumulated the 15th wave of Yuankou there, and the 12th wave on the old man's side is also about to be full, let's go back and brush up on Yuankou!" ”

"It's okay, Elder Zhang, I'm not as tight on time as yours, my village can accumulate another five hours, or I'll visit your village?" Ling Hu Yuan asked cautiously.

"Fuck off!" Zhang Qiuhan kicked Ling Hu Yuan, and Ling Hu Yuan reluctantly separated from Zhang Qiuhan, the old man, and ran back to his village.

When Zhang Qiuhan returned to the village, he found that at this time, he had indeed accumulated 10 waves of Yuankou, and in about 25 minutes, 12 waves of Yuankou would be full again.

"I've farmed more than 20 strongholds and earned a lot of resources, so take this opportunity to upgrade the defense towers and buildings first!" Zhang Qiuhan muttered, as the village was upgraded to level three, all buildings and defense towers could also be upgraded to level two.

It's just that when Zhang Qiuhan summoned Xuan Lianhua and was about to upgrade the crossbow tower to level 2 first, he heard the system prompt, "The player's scientific skills do not meet the conditions for upgrading the tower, and the towers cannot be upgraded, please upgrade the defense tower after increasing the level of scientific skills!" ”

"What's going on, when do you need skills to upgrade a Level 2 Tower?" Zhang Qiuhan's brows furrowed.

Zhang Qiuhan had already learned from the strategy in advance that whether it was a building or a defense tower, if you want to upgrade, there will be restrictions on skill levels.

For example, if a Xianxia defense tower wants to be upgraded from level 3 to level 4, then the player is first required to upgrade his immortal cultivation realm to the Qi refining period, according to different types of defense towers, what thunder light rune needs to be cultivated to level 3, or what fire spell needs to be practiced to level 3 or something, anyway, the player must meet the skill requirements before they can continue to upgrade.

The same is true for the magic department, first of all, the magic cultivation has to be promoted to the level of a magic disciple, and then there are all kinds of magic and elemental affinity and other skills.

The same is true for the Department of Science and Technology, which requires a variety of scientific skills and knowledge to reach the corresponding level, which is why Zhang Qiuhan, the top science avenue on Mars, chose the Department of Science and Technology...... There's no special reason, it's just my old job.

However, the defense tower of the general novice player, the first three levels of the upgrade do not require skills, after all, the player has no place to learn skills, only after the defense tower level reaches level 4, there will be skill requirements.

But Zhang Qiuhan didn't expect that this crossbow arrow tower was only promoted from level 1 to level 2, so he required his own pre-skills.

Well, Old Man Zhang seems to have forgotten that his defense tower is orange, is it possible for ordinary newcomers to get orange defense towers in the early stage?

"Look at it, old man, you need level 1 primitive mechanics, level 1 primitive materials science, and level 1 building tectonics!" Zhang Qiuhan brought up the attribute panel of the Repeater Arrow Tower, and found the skill limit required to improve the Repeater Arrow Tower.

This tower of crossbow arrows not only requires skill levels, but also requires three skills in one go...... One can imagine how much trouble the red epic-level defense tower must have.

"Hey, it would be nice if it were in reality, what the hell is this science and technology, the old man can directly write textbooks, can he still use this hard skill level?" Zhang Qiuhan shook his head, with a rather distressed expression.

"There are too few players in the science and technology department in the future life, so there are too few information on the science and technology department left on Mars, and I don't know how to improve these skills!"

"It won't be like Eastern Xianxia and Western Fantasy, players have to sit on the ground and meditate for more than ten hours to improve to level 1, judging from the information on the forum, if you want to improve a realm in the later stage, you even need to meditate for three or four years, and the old man doesn't have so much time to spend on skills!"

"Wait...... This science and technology department will not force the old man to hold a book and read it for more than ten hours, or even several years...... If it's knowledge that the old man hasn't learned, it doesn't matter at all, but if it's all low-level zero-level civilization knowledge, then it's better to let the old man write a textbook for them! Zhang Qiuhan thought about the scene of learning skills by himself in the future, and suddenly regretted why he chose the Department of Science and Technology.

It's like, if you come across such an interesting novel as "Krypton Learns to Build a Tower" at this time, and you have never read it before, then you won't get bored of reading it for a day and a night.

But if you are holding a copy of "Three-year Mock 5-Year College Entrance Examination", and TM is the first edition of Xiaosheng, teaching you how to perform four operations and Hanyu Pinyin's "Three-year Mock 5-Year College Entrance Examination", and forcing you to watch it for a day and a night, it is estimated that you are about to explode.

The road that has never been walked before, although the journey will be bumpy, but the road is lined with scenery that has never been seen before.

But if you have already walked the road once, you have to go through it again, although it will be relatively smooth, but this is enough to make people crazy!