Ancestor of Sword Sect Mountain had already been recorded in the painting and folded into a Civilization Heavy Artifact, so Mud Blade could no longer draw him again. Even if Ancestor of Sword Sect Mountain were rescued and recovered, it still could not do so—unless it captured Ancestor of Sword Sect Mountain again and covered him in cement once more.
No talent was invincible.
The more powerful a talent was, the more limitations it had.
The inheritance of the Mud Water Kingdom had its limitations as well. Otherwise, anything touched by cement could be drawn, and the Mud Water Kingdom would have long since been invincible. If it could not win, it could run, then hide in a corner and focus on drawing images of its enemies and constantly erasing them. Who could stand that?
The Mud Water Kingdom did not yet possess that ability.
That was why Mud Blade asking Lu Yin to save it from the very beginning had been a trap prepared specifically for Lu Yin, a trap designed to counter Instant Movement. It had hoped that Lu Yin could rescue Ancestor of Sword Sect Mountain at that time, but he could not be allowed to rescue him too easily. If it looked fake, Lu Yin would become wary.
Lu Yin also had to do everything possible to rescue Ancestor of Sword Sect Mountain, thereby forcing out the fact that Ancestor of Sword Sect Mountain had been folded into a Civilization Heavy Artifact and waiting for the true moment of rescue.
Thus, even if Ancestor of Sword Sect Mountain had not avoided Lu Yin earlier, Lu Yin would still have been wary of Mud Blade's talent and would not have allowed himself to be touched by the cement.
In a battle of life and death, what mattered