Bran handed over the Valyrian steel dagger, perhaps he thought that even if he didn't show it to Shen Long now, when he transferred the dagger to Arya in the future, Shen Long would still be able to see it from Arya.

Draw the dagger and compare it with the sword containing Mithril on his body, both are as light and sharp, but the patterns on it do have differences, Mithril is whiter than Valyrian steel, and the surface of the Valyrian steel dagger is full of water ripples, but there are no of these on the Mithril longsword.

"Thank you!" It didn't seem to be the same metal, Shen Long returned the dagger to Bran and handed the long sword over, "Can my sword kill strangers or ghouls?" ”

Bran's fingers lightly brushed over the long sword, closed his eyes and felt it seriously, before he opened his eyes again for a long time, "I don't know, I feel a unique power, this power is not the same as the magic of the children of the forest and the dragon flame of the dragon, but there is indeed a feeling that can ward off evil." ”

"Maybe you won't know until you try." Shen Long nodded and withdrew his sword, this answer was not beyond his expectations, the dwarves could use these weapons to deal with Sauron's orc army, maybe Shen Long could also use this sword to deal with the ghouls, ghouls and orcs are evil forces, aren't they?

"So, do you know how to make Valyrian steel?" Shen Long asked again, this metal is light and tough, a bit like titanium often used in aerospace, but it doesn't look the same, if you can understand the refining method, it may be of great use if you can bring it back to the real world.

"Since the destruction of Valyria, the technology of Valyrian steel has been lost, and no one in the world has been able to make new steel, and only skilled craftsmen can still try to melt existing steel and recast weapons." Bran shook his head and said, the Green Prophet needs the help of Fish Beam Wood to spy on everything in the world, and Fish Beam Wood only exists in Westeros, and he can't see the affairs of the Valyrian city-state.

"That's a shame." Shen Long shrugged, it seems that there is no hope of finding a way to smelt Valyrian steel, and when the time comes, let's find a way to see if we can get some samples to bring back!

Jon's Claws, House Tully's Heartbreaker, and Brienne's Oath Sword are not easy to ask for, but there's more Valyrian steel than meets in Westeros, Euron-Greyjoy has a set of Valyrian steel armor, he gave some Valyrian steel daggers to the Iron Islands' Election Party, Maester Malwyn in the school city has a Valyrian steel ring, scepter, and mask, and Jaime has a widow's howl in his hand.

The two chatted at the city gate for so long, Sansa and Arya also came out of the catacombs, looking at this scene, Shen Long remembered the plot of the last season, who came up with the idea to let the old and sick remain in the catacombs? Didn't they know that there were the corpses of the Stark ancestors? Don't you know that the Night King can resurrect the dead?

Hiding in a place where so many corpses are stored is simply throwing yourself into a trap! When the ancestor apparition crawls out of the coffin, you should know that you are afraid, right?

"Sir, thank you very much for your help to Arya." Sansa came up to Shen Long and thanked him, "You're a friend of our Stark family, you can stay in Winterfell while I have a room and minions for you." ”

"Thank you, this is Master Cobain, although he lost his necklace, he is the most outstanding Master of the Seven Kingdoms, Winterfell is now facing the threat of the Wraith, he can help you, he has made a giant crossbow enough to kill giants, and he is also proficient in the method of making wildfire, these are all good ways to deal with ghouls." Shen Long introduces Cobain to Sansa.

Arya may have told Sansa about Cobain in the catacombs, but Sansa didn't refuse, and agreed, and asked someone to prepare a room for Cobain, as well as all the materials and equipment he needed for his research.

Cobain was kicked out of the school city, and after he went out, it happened to be when the young wolf lord Robb and the Lannister family were fighting, Cobain was wounded by the army of the Magic Mountain, and then Robb and Teresa saved him, and he is now in Winterfell to serve the Stark family, which can be regarded as repaying the favor!

I just don't know if Walken, the current bachelor of Winterfell, will be angry, but Shen Long thinks it's interesting when he thinks of this, Walken turned out to be a bachelor of the Burton family, and Cobain also served him for a period of time when Luce Burton took Harrenhal, and in terms of seniority, Cobain was a little earlier than Walken.

Shen Long asked people to choose a room next to Cobain, and when he got up, he immediately studied more advanced giant crossbows with Cobain, as well as the large-scale production method of wildfire, and the habit he had developed over the years made Shen Long even if he went to the magic world, the first thing he thought about when he encountered the enemy was to climb the technology tree.

If only a few more giant crossbows could have dealt with the giant ghouls, Lyanna-Mormont wouldn't have died, right? If only there were more wildfires, maybe the army of ghouls would be kept out of Winterfell.

After a busy morning, Shen Long left the laboratory under the adoring gaze of Cobain, ready to go out to find something to eat, and when he walked to the square, he happened to see Arya playing with Brienne, and Podrick, who had a unique ability to enjoy it for free in the King's Landing brothel, was watching from the side.

In the TV series, Arya and Brienne are on par, and now Arya seems to have the upper hand, and it seems that Arya is still very effective in learning with her during this time.

Arya had now put on the Valyrian steel dagger, and after a few turns, she landed it across Brienne's neck and won the game.

Shen Long applauded Arya's wonderful performance, he glanced upstairs, Littlefinger and Sansa's expressions were a little complicated, Shen Long was intrigued by Brienne's performance, he stepped forward and challenged Brienne, wanting to see what the difference between the knight's swordsmanship and the swordsmanship of the East was.

It was too quick to deal with those Kingsguard in King's Landing, and I didn't have time to study it properly; After hearing Arya say that Shen Long was able to easily deal with the three Kingsguards, Brienne gladly accepted the invitation, and the two of them competed in the square.

For the next period of time, Shen Long's life was very regular, he got up in the morning and went to Coburn's to see his latest research progress, give him some suggestions for improvement, go to fight Brienne at noon, and then continue to teach Arya.

He turned a blind eye to the strangeness in the castle, and the mission was not to unify the Seven Kingdoms, none of which had anything to do with him, and at the same time, the situation in Westeros had become chaotic because of Cersei's death.