After agreeing with the people in the research institute on the direction of the next step in controlling the seven cities, Liu Zong talked to Director Wu alone about the Huangquan Dragon King.

For this existence that died more than 10,000 years ago, Director Wu still has some gossip in his hands, after all, Director Wu looks young, but he is actually only one generation away from the Huangquan Dragon King, when he was born, the Huangquan Dragon King had just died, his disciples and family members were still alive, and some of the information that circulated was still relatively true.

In addition, Director Wu's own true spirit incarnation is mainly based on books, and he still has some information in place.

After combining some of the things that Liu Zong had heard from the underworld, Director Wu also pieced together the fact that the death of the Huangquan Dragon King was probably because he heard some terrible news in the underworld.

Liu Zong also agreed with this statement, but he didn't dare to say that the Dragon King of Huangquan might have found what the dragon wanted, so he could only hide the secrets of the underworld inside.

Fortunately, Director Wu didn't inquire much, but just arranged some study directions for Liu Zong, before Lv4, Liu Zong had always been a student of the Heavenly Emperor Lord University, and the school was in charge of Liu Zong's grades.

Of course, it is impossible to let Liu Zong upgrade his level now, and at the same time, Liu Zong does not need to find his own suitable path, and the academic topics arranged by Director Wu for Liu Zong are all about architecture, urban management, etc., which do not seem to be very important, but they will definitely affect Liu Zong's future growth.

For Liu Zong, these are the foundation of his growth, if he is in a hurry to advance to Lv3, then the impact of not learning is not too big, but for players like Liu Zong, who will definitely not be able to advance in a short time, the more solid the foundation is, the better.

So when Liu Zong looked at the thick list of knowledge books that needed to be learned, he knew that he would not be idle for a long time.

Of course, while reading and dealing with things in the city, it is not difficult for Liu Zong, and in the transportation of the Blue Emperor Tongtian Star Domain, Liu Zong's learning attitude is still very serious.

At the same time, he also has a good attitude towards the seven cities, and he has not relaxed the management of the city at all because his current strength has exceeded that of ordinary Lv2 players.

Under such efforts, Liu Zong's work was naturally recognized by those in the research institute, and they all hoped that Liu Zong could continue like this, so their attitude towards Liu Zong was getting better and better, and they would provide some good things to Liu Zong from time to time.

With their help, Liu Zong also slowly regained his strength and daily routine, usually in addition to going back and forth to the seven cities, he would put most of his energy on studying, of course, in addition to studying, he would also deal with his Canglong Fortress.

For Liu Zong's Canglong Fortress, the trip to the underworld can be regarded as a too much improvement, not only has the size reached the level that can only be achieved by the Lv3 talent, but the quality has also undergone earth-shaking changes.

Canglong Fortress, which has been soaked in the water of the River Styx, and even entered the bottom of the underworld, and has been affected by various fantasy gems, has already reached the level of purple quality at this time.

This is a good thing and a bad thing for Liu Zong, the good thing is that his combat power has improved, and the bad thing is that Liu Zong's Canglong Fortress still has the potential to grow, but the materials he needs are more demanding.

And Liu Zong can't do it if he doesn't upgrade, because if he doesn't upgrade, even if his career level goes up, his path to promotion will become troublesome, but instead he keeps the Canglong Fortress constantly upgrading, maybe when he reaches Lv3 (12 stars) and is ready to advance, his Canglong Fortress length can grow to the kilometer level.

If that's the case, it will be a good thing for Liu Zong, because according to the regulations of the interstellar law, the length of the aircraft or other items between the star fields must be more than one thousand meters.

As for the adventure spacecraft on the periphery of the frontier star field, the length requires more than three thousand meters.

If Liu Zong's Canglong Fortress can break through the kilometer level, then after he advances to Lv4, he can directly put Canglong Fortress outside the real world, and control Canglong Fortress to move around, and he no longer needs to take a spaceship or something where he wants to go like before.

Of course, this is only a benefit, and if Liu Zong can upgrade the Canglong Fortress to more than a kilometer before Lv4, then the Canglong Fortress will eventually have a chance to break through the size limit and grow without restrictions.

If there is no way to do this, after Liu Zong advances to Lv4, the potential of Canglong Fortress will only reach about five thousand meters in the future, and he will not be able to make a breakthrough to the limit.

Therefore, Liu Zong must fight for the potential of Canglong Fortress in the future and lay a solid foundation, and this is quite a difficult thing for a civilian like Liu Zong, especially now that Liu Zong is no longer a person, he still has a family behind him that needs his input.

Liu Zong can't use all the things he gets on Canglong Fortress at will, he needs to think about the children's affairs.

Therefore, for his Canglong Fortress, Liu Zong can only deal with it from the details, using some small things and the knowledge he has just learned to improve the growth of Canglong Fortress, and not let his quality decline.

It turns out that the Heavenly Emperor Lord University is still very researched in improving the city, after all, the lord's external propaganda is the richest profession, but as a member of the lord, you know, the lord is also the most money-burning profession.

Whether it is the construction in the city, or the development of the city itself, it requires a lot of resources, and these money can not be saved, if you don't learn carefully, you won't think of so many methods, and sometimes you may waste all kinds of resources in vain.

Now with Director Wu's suggestion, Liu Zong consciously learned the basic knowledge of the lord, and Liu Zong made correct judgments in many unnecessary places.

For example, the buildings in the Dragon Cemetery, at the beginning, Liu Zong still had the heart to design various buildings by himself, but after comparing the information provided by Director Wu, Liu Zong found that most of his previous ideas had actually been thought of by players.

Especially for the treatment of dragon corpses, as well as the use of imitation dragon corpses, the players' brains can be said to be quite large.

Liu Zong selected some of these designs that were more feasible and suitable for his own requirements, and slowly joined them in the Dragon Cemetery.

Although there is no guarantee that there will be a good result every time, at least the resources that Liu Zong put into it will not be wasted, and slowly the buildings in the Dragon Cemetery are also complete, and at this moment, the Qing Emperor sent a message and asked Liu Zong to meet him once.