The television broadcast entertainment news. An actress had boldly declared her love for Yu Xian, only to be accused of using him to gain publicity.

Yu Xian lay on the sofa, chatting with Eternal Purity while watching television. The two traded questions and answers on all manner of subjects, but the conversation gradually circled back to the same topic.

"Auntie, why aren't the souls and bodies of living beings from Level-One Worlds strong enough?"

"Because they are fundamentally different. Take the Blue Planet, for example. On a Level-One Blue Planet, the peak physical condition a human can reach through training is merely the normal physical condition of an untrained adult on a Level-Two Blue Planet."

"Why is that?"

"The environment and food both play a role. There are also subtle genetic differences."

"Could someone from a Level-One World improve their constitution by living in a Level-Two World for a while?" Yu Xian asked.

"Unfortunately, no."

"Auntie, the Indivisible Yin-Yang Sea of Tribulations...