A year later, outside the Heavenly Dao Barrier, the desert stretching hundreds of kilometers in every direction had been completely occupied by seven kinds of pioneer weeds.
However, this place had not become a green prairie. Instead, it had turned into a strange, gray-brown "thicket of blades."
The countless dense Thorn Teeth were like mouthfuls of sharp files, guarding this land and the ecosystem that had only just formed here.
This was actually an extremely fragile ecosystem.
First, the Heavenly Dao had to steal spiritual energy and water from inside the barrier as an investment.
Then it had to gather Law Residue Liquid and Law Residue Scraps, guide the plants through mutations, and ultimately obtain several times more spiritual energy and water, completely sustaining the ecosystem here.
Once the Law Residue Liquid and Law Residue Scraps in the vicinity had all been collected, however, this place could only decline completely, like a dried-up coal mine or oil field.
But at least this had already secured the first step.
Because the second wave of the Heavenly Dao's little-grass invasion was already being prepared. An invasion army of as many as thirty different types of weeds was preparing to set out.
At the same time, the Heavenly Dao had already sent five entire batches of little-grass pioneer-army seeds into the desert.
Moreover, the combinations were more advanced this time, clearly refined through experience and lessons learned.
This time, the combination was two Thorn Claws, twelve Thorn Tails, one hundred Thorn Teeth, five Climbing Pumpkins, five Climbing Watermelons, three Rolling Winter Melons, and twelve Rolling Wine Jars.
Each combination formed a pioneer-army squad capable of covering and occupying one square kilometer.
The five waves of weed pioneer armies sent out by the Heavenly Dao covered exactly three thousand square kilometers.
This was a