Time flowed like water inside the space. There were more than enough food for them inside their Spatial Ring but Golden Core Stage cultivators didn't really need to eat. They only eat as a way to stave their boredom from only having to practice and practice inside this seemingly eternal space. 

In just one year's time, Prince Lin Yan was the first to make his breakthrough as he summoned the tribulation of fire.

Everyone watched from the side as no one was allowed to disturb one's tribulation. First, they could even die if the fire strikes them. Second, if they got wounded because of the tribulation, their soul would also be incomplete, thus making them closer to get completely annihilated without the chance for reincarnation.

So, it was a tacit agreement that no one would try to disturb one's tribulation.

Fire seemed to spread from the sky towards Prince Lin Yan and attacked him from all sides.

Tribulation of fire.

After this there would be tribulation of lightning when they advanced to the next cultivation stage. However, it would definitely take years before they could finally reach that point because the process was extremely long.

Shua!

As the fire was absorbed into Prince Lin Yan's body, his skin looked scorched. The defense of Qi he had started to fall through. Fortunately, the fire seemed to be over and Prince Lin Yan safely passed the tribulation.

"That was close," Lin Yun murmured while watching from the side.

Lin Xiao passed a glance at Lin Yun. "You can pass it easily as long as you fixed your body constitution."

"… Could you please not remind me of that?"

"I'm only telling the truth!"

In fact, Wenren Yu had told him that if Lin Yun managed to overcome the barrier of his physique, he would advance by leaps and bounds. Unfortunately, the two sides were shy with each other and didn't seem to make any progress at all even after some time had passed.

"Let's go back and train."

"Ah, it's not enough?"

"Our goal here is to advance to Golden Core Stage 2!"

Prince Lin Xian, who had just finished watching his brother: "…" f*ck you, do you think that we can advance immediately just because you say so?

Prince Lin Yan spent more than four years practicing in Golden Core Stage 3 before he could finally advance to Golden Core Stage 4. Prince Lin Xian had no confidence that he would be able to advance that fast considering that he had only advanced to Golden Core Stage 1 not long ago.

"Let's go back to practice!"

In the second year, both Lin Yun and Fan Ling advanced to Golden Core Stage 2 to the surprise of others. Not only that, the power they exuded made it looked as if they were much more powerful than that rank.

Prince Lin Xian watched from the side before sighing. "I can't believe that there's such cultivation that required two people from different gender."

"That's called dual cultivation."

"And Lin Xiao, didn't you say that you want to advance faster? Two years have passed and you're still in Golden Core Stage 1!"

"Shut up!" Lin Xiao was also vexed. If not because of the fact that the Qi reserve of Lin Hu was so big that he couldn't purify them all so quickly, he would not be lagging behind like this. Even though Lin Hu had been working too, his progress was still slower than the others despite the help they had received.

"Those who are already at Golden Core Stage 2, time to spar." Princess Lan Yi Hua smiled brightly. She was also training to reach Golden Core Stage 3, but she knew that it would take some time because of the phoenix blood that was mixed into her body. In addition, she would have to trigger it outside because the tribulation of fire would certainly destroy everything in her case.

She didn't want to destroy this special place. 

"Sure." Fan Ling took out her fan and smiled. She looked at Princess Lan Yi Hua with a brilliant smile. "I have never felt better than now!"

Swish!

Bang!

The two girls were busy sparing with each other while the others were staying still in their cultivation. No matter what, they had to progress faster. While outside here only two hours had passed, they had already spent two years in this space.

After two years and three months:

Prince Lin Xian finally advanced to Golden Core Stage 2. If not for the wrong place and time, he would have called Prince Lin San over to brag over his achievement. 

"You're staying in Foundation Establishment longer than Lin San." Prince Lin Yan looked at his younger brother. "So it's only natural that you should be faster to reach Golden Core Stage 2."

"That's because Lin San is not training to the peak!"

"He's already good enough as he is."

"But…"

"Every cultivator have their own path. Their strength and weakness differ from each person. Trying to have a contest of strength with someone who's focusing on his intelligence is not something to be proud of."

After being rebuked by Prince Lin Yan, Prince Lin Xian returned back to his training with sullen expression. He truly had no grounds to be proud.

After two years and five months inside the special space.

Lin Xiao finally advanced to Golden Core Stage 2. He felt as if so much time had passed while he was staying here because he was practically the last to make his breakthrough after the bitter training.

"Are you ready now?" Princess Lan Yi Hua looked at her husband and smiled.

Lin Xiao nodded. His appearance didn't change from two years ago, but he knew better that his mental age was already 23 and no longer 21 like before. Spending time training here was quite taxing.

'You better cancel the formation soon or you'll be exhausted. Even though it's channeling the power of the world, it's still connected to you and naturally will use your dragon power within your body.'

'Ah.'