"How can you be sure that what you just collected is the ten-thousand-year-old Red Copper among all these refining materials here?" Yun XiaoTian asked seriously.

Li Lin smiled again, "Because I seem to recognize the other refining materials, so it's unlikely to be the ten-thousand-year-old Red Copper."

"Do you really recognize them all?" Yun XiaoTian asked in surprise again, then helplessly looked at Li Lin and sighed slightly.

Seeing Yun XiaoTian's expression, Li Lin was somewhat certain again that what he had just collected was indeed the ten-thousand-year-old Red Copper. He couldn't help but feel a bit of trembling in his heart. When he first touched the ten-thousand-year-old Red Copper, Li Lin could already feel the fluctuations of energy within it, much stronger than the other two refining materials' energy fluctuations.

This is something that ordinary people would find hard to sense, but as a spiritual practitioner, Li Lin had his own advantages in this regard. Taking everything into account, Li Lin dared to choose the third refining material.

Concerning the ten-thousand-year-old Red Copper entrusted by Uncle Jiang, Li Lin naturally did not dare to be careless.

"Li Lin, the ten-thousand-year-old Red Copper is not an ordinary item. Although our Yun Yang Sect has always been unable to refine this item, as far as I know, many powerful individuals covet it. Therefore, do not leak the news that you possess the ten-thousand-year-old Red Copper, to avoid bringing disaster upon yourself," Yun XiaoTian seriously said to Li Lin.

"I understand!" Li Lin nodded lightly. He was naturally clear about this. If people knew that the Yun Yang Sect's treasure, the ten-thousand-year-old Red Copper, was in his possession, he would probably be hunted every day.

"You are no longer a disciple of the Yun Yang Sect, so you don't have to call me Sect Master. I will announce your engagement with Hong Ling in the next few days. Shouldn't you also change the way you address me?" Yun XiaoTian looked at Li Lin and smiled slightly.

"My apologies, father-in-law." Li Lin was startled, then chuckled.

"A teachable lad." Yun XiaoTian smiled slightly, seemingly very satisfied. With a flash of light in his hand, he handed a storage ring to Li Lin, saying, "Carrying a spatial bag is somewhat shabby for my son-in-law. This storage ring is for you. Inside, there is a set of mid-Xuan level Wind Technique 'Three Thousand Flowing Clouds Hand', which is highly valued by our Yun Yang Sect. Although it is a mid-Xuan level technique, if combined with the Fleeting Shadows technique, its power can approach that of a high-Xuan level. Considering your current strength, it might be difficult to practice a mid-Xuan level technique, so you can practice it later."

"Thank you, father-in-law." Li Lin immediately accepted the storage ring. He didn't care much about the storage ring itself, as he already had several, but he didn't want to attract attention, so he always carried a spatial bag. However, hearing that there was a mid-Xuan level technique inside the storage ring, Li Lin became interested. Upon inspecting it with his mind, he found indeed there was a mid-Xuan level technique inside.

"Calling me father-in-law, I won't let you suffer. Treat Hong Ling well in the future. She might be a bit arrogant, but she is reasonable. Just indulge her a bit and don't let her be wronged," Yun XiaoTian said.

"I will do my best to love Hong Ling," Li Lin said seriously, speaking from the heart. His woman, of course, deserves his love.

Gaining another set of mid-Xuan level techniques made Li Lin very happy. As the saying goes, it's better to marry well than to work well. This seems to have some truth to it. If it were someone else, calling someone father-in-law and getting a set of mid-Xuan level techniques would be unlikely.

"Father-in-law, I heard that you gained quite a lot at the Three Sects and Four Gates Conference?" After directly acknowledging the storage ring with his blood, Li Lin wore it on his hand and thought about Yun XiaoTian's gains at the conference, which made him feel that the mid-Xuan level technique he just got was nothing special.

"Don't get any ideas. The value of the techniques I won doesn't compare to the ten-thousand-year-old Red Copper you took. Besides, you're even taking my daughter away. What more do you want?" Yun XiaoTian seemed to see through Li Lin's thoughts and immediately silenced him.

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"Hehe, I was just asking casually, no other meaning," Li Lin rolled his eyes. Dealing with his father-in-law, he really couldn't gain any advantage. But thinking about it, taking away the ten-thousand-year-old Red Copper and even getting his daughter, he should be satisfied.

"Let's go," Yun XiaoTian said to Li Lin.

"Father-in-law, I've only chosen two treasures. You promised I could choose three. Let me look again." Li Lin wouldn't leave. He had only taken two treasures and couldn't miss out on the third.

"Sigh," Yun XiaoTian sighed, finally realizing what it meant to "try to steal a chicken only to end up losing the rice." Originally, he wanted to keep the ten-thousand-year-old Red Copper safe, but despite all his efforts, he couldn't keep it and ended up giving away two more items for free.

Watching Li Lin looking down and searching in the Thousand Treasure Vault, Yun XiaoTian also showed a slight smile. After all, the son-in-law is half a son, so it's okay to take one more item.

However, Li Lin didn't know what to choose at this moment, as there were too many things he wanted.

Just as Li Lin hesitated, he suddenly saw a jade slip at the edge of the third jade cabinet. This jade slip had no luster, so when he first entered the Thousand Treasure Vault, his eyes were dazzled by the treasures, and he didn't notice this jade slip.

Seeing this jade slip, Li Lin didn't pay much attention at first. But the moment he looked at it, he suddenly felt a familiar sensation, as if it was connected to him in some way. This familiar feeling led him to involuntarily walk over and pick up the jade slip.

"This jade slip doesn't have any special features. It has been in our Yun Yang Sect for who knows how long, always just in the Thousand Treasure Vault, so it has been left here without much attention, not knowing what it is," Yun XiaoTian's voice already spoke from behind as Li Lin picked up the jade slip.

Li Lin carefully examined the jade slip, which carried a hint of ancient cyan color, very old, with even some dirt marks on the edges, as if it had been stolen from an ancient tomb.

"It's one of the Four Divine Techniques." The moment Li Lin touched the jade slip, he suddenly remembered the Four Divine Techniques. This jade slip, just like the Vermilion Bird Art Uncle Jiang gave him, had a familiar aura that Li Lin could almost immediately determine it was one of the Four Divine Techniques, although which one it was, he couldn't be sure at the moment.

"I didn't expect it to be one of the Four Divine Techniques." Li Lin was immediately overjoyed in his heart. The Four Divine Techniques, he was currently seeking them, and unexpectedly, one of the techniques was right inside the Yunyang Sect's Thousand Treasure Vault. If he hadn't made this trip, he might never have found it.

What is called luck, this is called luck. Li Lin felt that his luck was really good. This way, the old fox, his father-in-law, intended to make it difficult for him to obtain the ten-thousand-year-old red copper, but he didn't expect to help him get a set of the Four Divine Techniques. He really should thank him properly.

Suppressing the excitement in his heart, although Li Lin was ecstatic inside, his face did not show any traces. He then put the jade slip into the storage ring that Yun XiaoTian had just given him and said, "Father-in-law, I will take this."

"You want this jade slip." Yun XiaoTian was somewhat surprised, originally thinking that Li Lin would ruthlessly choose an item that he also couldn't bear to part with. However, he chose a broken jade slip instead, and didn't say much, then said, "Then go back, you lad have taken quite a bit of advantage this time."

"Hehe!" Li Lin chuckled without saying a word, truly gaining a lot from this trip to the Thousand Treasure Vault.

After leaving the Thousand Treasure Vault, Li Lin chatted with Yun XiaoTian for a few words and then hurriedly bid farewell to Yun XiaoTian.

Upon reaching the peak where he resided, Li Lin quickly entered his room.

Sitting cross-legged, Li Lin once again took the jade slip he had obtained from the Thousand Treasure Vault into his hands. The jade slip had a trace of ancient cyan color, very ancient, completely the same as the Vermilion Bird Art he had obtained before.

"Boss, what is this?" Little dragon immediately asked Li Lin, his little eyes staring at the jade slip in Li Lin's hand, also looking very curious.

"This is a good thing." Li Lin said lightly, forming a hand seal, and a drop of fresh blood fell onto the jade slip, but there was no change on the jade slip.

"How could this be." Li Lin exclaimed in surprise. The same had happened with the Vermilion Bird Art before; after his blood drop, he also could not cultivate it. Later, without realizing it, he was able to cultivate it.

Recalling carefully in his mind, Li Lin seemed to think of the time because Little dragon was shedding its skin, and a trace of fresh blood merged into the Vermilion Bird Art, after which he was able to cultivate.

"Little dragon, give me a drop of your blood." Li Lin then said to Little dragon.

"Boss, what are you going to do?" While Little dragon spoke, a drop of fresh blood was already forced out from a scale on his back.

"Just doing a test." Li Lin said, and immediately wiped the jade slip with the fresh blood on Little dragon's scale.

In the room, Bai Ling, who had returned to her original form, was also looking at Li Lin with curiosity.

As soon as a drop of blood touched the jade slip, suddenly, a faint luster appeared on the jade slip. Li Lin, seeing the change in the jade slip, was immediately excited.