Ling Tian was facing only a Spirit Division Stage advancement tribulation this time, while his heart had already reached the Body Integration Middle Stage. The gap between them was considerable, so overcoming this tribulation wouldn't be very difficult for him. Besides, according to Poxiong's estimation, Ling Tian would be able to pass it safely with just the Body Integration Early Stage.
Poxiong was actually a little worried. The tribulations Ling Tian would face in the future were growing more and more terrifying. Even this Spirit Division Stage advancement tribulation required him to have Body Integration Realm strength. But when he faced a Mahayana Stage advancement tribulation, its power would likely be terrifying. Poxiong feared that even Ling Tian, with strength at the Great Perfection of Tribulation Crossing Stage, might not be able to pass it.
Ling Tian knew what Poxiong was worried about. He pondered for a moment, then guessed, "Poxiong, do you think that after my heart passes its tribulation and becomes immortal, I could then face the Tribulation Crossing Stage advancement tribulation with my dantian?"
"I don't know either. It's hard to say whether the heart can even undergo a tribulation." Poxiong's tone was uncertain. As if he'd thought of something, he muttered, "Ling Tian, quite a few people among your group cultivate their hearts, but have you ever seen anyone face an advancement tribulation at the heart?"
After thinking briefly, he shook his head. "No. I started cultivating my heart first, and with my talent, if it were going to face a tribulation, I should have experienced one long ago. But I haven't. This could very well be because cultivation at the heart simply doesn't undergo tribulations."
"Right, that's it." Poxiong pondered, then said to himself, "So the highest your heart cultivation can reach is the Great