As he continued deeper, Li Su changed his original plan. He no longer merely left traces of himself everywhere to avoid being directly tracked. Whenever he came to a fork in the path, he would release clones and send them all down separate routes to search.
It had to be said that the inside of the Black Tortoise was truly enormous.
Even its tiny blood vessels stretched for an astonishing thousand li.
Their width and height alone were staggering; some reached a hundred meters in diameter.
That was terrifying. How large could a human blood vessel possibly be? And this was not even one of the Black Tortoise's main arteries. Judging by where he had entered, he was still inside one of its branches, and would have to travel quite a long distance before reaching the main artery.
The inside of the Black Tortoise was far larger than its exterior.
After more than ten minutes of continuous exploration, Li Su came to that conclusion.
By his current reckoning, he had only traveled a little way from a human's shoulder—not even as far as the collarbone.
In over ten minutes, he had covered more than ten thousand li in distance, yet he had not even reached the collarbone. The Black Tortoise's interior was, in truth, practically the size of a vast world.
That made sense. The Primordial World of ancient times had been unimaginably vast. Nuwa had severed the Black Tortoise's four limbs to prop up the heavens; its true size must have been terrifying beyond measure.
Yet compared to its size, what made Li Su sigh softly was the laws of water surrounding him.
Deathly still.
All the water carried an indescribable heaviness, a tremendous unwillingness, a yearning for life.
That feeling was despairing, like putting coptis root into one's