The Strongest Prodigy Doctor

After Ye Tianfan gestured several times outside, he came to the mouth of the Demon Beast. Initially, he was worried about how to squeeze through with the mouth closed. However, upon arriving at the front, he discovered the gaps between the tusks—large like overpasses—allowing easy entry without any obstacles.

Once inside, Ye Tianfan realized the first challenge was the obstruction posed by the tongue.

The tongue was entirely blocking the path, and to reach beyond it, into the throat, navigation was necessary. He had to edge along the teeth, move to the far end, and from there, weave into the throat.

Ye Tianfan faced two paths: to the left, the teeth, and to the right, the teeth.

After some thought, he chose the left, adhering to the idea of "male left, female right."

Having decided, he slowly headed in that direction.

Ye Tianfan's rope was stored within the Xuanhuang Tower, continually withdrawn from the inside. He attached one end to the Demon Beast's lip and released a section of rope after each step from the Xuanhuang Tower, sparing the burden of carrying it, as it was too heavy.

If the Xuanhuang Tower were a standard storage Magical Treasure, this method would pose a problem. Water could flow from the rope into the tower, contaminating the things inside.

However, Ye Tianfan's Xuanhuang Tower was not an ordinary Magical Treasure but one employed with time application, preventing such consequences. Any water entering the tower wouldn't damage the items, appearing as if freshly entered due to the time application.

Thus, Ye Tianfan was not concerned and opted for this strategy.

Although Ye Tianfan was moving on foot, whenever a stretch was smooth, he would infuse Spiritual Power to increase his speed. Still, it took him most of the day to reach the root of the teeth. From there, Ye Tianfan needed to navigate from the root of the teeth to the throat. The support of the teeth made the space ample, allowing for flight.

Thus, Ye Tianfan summoned the Fire Lotus Sword and swiftly flew from the teeth root towards the throat.

Flying was much faster than walking. In less than an hour, Ye Tianfan glimpsed a giant shadow ahead through the glow of the Fire Lotus Sword, presumably the uvula, indicating his arrival.

Indeed, upon reaching the enormous uvula, Ye Tianfan saw a deep, dark channel stretching into the distance—the esophagus of the Demon Beast.

Ye Tianfan descended, as flying was unsuitable for the next leg due to unknown residues remaining in the esophagus. If solid, sharp objects lingered, they could impede the Flying Sword and cause a collision, making recovery difficult in this location.

Ye Tianfan decided to proceed on foot to stop and evade potential threats.

New concerns arose for Ye Tianfan. Outside, he measured the distance with a straight line using the rope. Now, just entering the mouth and navigating around the teeth consumed extra length. Ye Tianfan feared the rope might run out before reaching the heart, but the extra rope left over from previous outside measurements alleviated these worries.

If the path ahead remained smooth, avoiding more twists and turns, the rope should suffice. Ye Tianfan started walking towards the distant end of the esophagus. Yet, before moving forward, he tested the esophagus with the Fire Linked Sword, finding it couldn't easily break the esophagus despite its flexibility and excellent resilience. Only with maximum effort could a hole be punctured.

For Ye Tianfan, a single puncture was enough. Once punctured, he could expand the hole, allowing a clear exit.

Calculating, Ye Tianfan estimated two days on foot sufficed to reach the heart. From there, he planned to cut an opening toward the heart.

The real test lay after breaking the esophagus, where landmarks like teeth or esophagus ceased. It became a blind trek through densely packed organs, making identification challenging. Distinguishing the heart depended solely on the organ's intensity.

Ye Tianfan resolved to proceed swiftly along the esophagus, minimizing delays to reduce travel time. During this pursuit, he refrained from breathing, maintaining breath-holding status.

Previously, a brief inhale left Ye Tianfan almost suffocated with pungent vapor—unbearable to many. He believed a roar from the Demon Beast alone could trigger vomiting, hindering his battle state.

Ye Tianfan journeyed two full days, estimating the heart was the nearest point. He started hacking open the esophagus to the left with the Fire Lotus Sword.

Opening an exit from the esophagus wide enough for free passage took half a day. The esophagus's resilience was immense, making widening a hole arduous. Exhausted, drenched in sweat, yearning for breath, Ye Tianfan finally compelled the esophagus open, creating an aperture for free passage.

Ye Tianfan rushed through the opening, facing an utterly massive, boundless wall. Based on visible size, he estimated this unknown organ equivalent to a city of grand proportions.

Faced with the colossal organ, Ye Tianfan sighed deeply in bewilderment. Fortunately, exiting this part led to only three distinct organs if he stayed true to course.