As an ancient immortal exotic insect born in the primeval wilderness, the Silver Sheath Worm was notoriously difficult to advance. Anyone with even a little knowledge understood this clearly.
Yet the Silver Sheath Worms Qin Fengming had cultivated had advanced successively in a mere two thousand years.
From larva to half-mature form and then to adult, the Silver Sheath Worms had steadily risen in realm. Not only was their advancement speed astonishing, but the process itself had absolutely blazed a new trail in the advancement of Silver Sheath Worms.
Qin Fengming had consulted numerous methods for cultivating spirit insects of Heaven and Earth. Regardless of the species, there had never been any record of spirit insects advancing as his Silver Sheath Worms had.
The speed at which his Silver Sheath Worms advanced and the astonishing method they used were beyond anyone's imagination.
Back then, True Person Yiyang had painstakingly cultivated that Silver Sheath Worm for who knew how many tens of thousands of years before finally allowing it to advance to Mature Form.
Although Qin Fengming's Silver Sheath Worms were only at the Adult Stage, their numbers were absolutely something True Person Yiyang would never have dared imagine.
Now, although these Silver Sheath Worms were displaying a situation different from their previous advancements, Qin Fengming sensed that they might be able to advance once again.
If this advancement could allow him to gain even several thousand half-mature spirit insects, then to Qin Fengming, it would absolutely be an unimaginably powerful insect swarm.
Several thousand half-mature Silver Sheath Worms, each tempered by Heavenly Tribulation and possessing terrifying lightning power, had also consumed who knew how many heaven-defying materials. Qin Fengming himself could not imagine how powerful they were.
At the very least, Qin Fengming was certain that in neither the modern