A Yin Beast!
Thanks to Su Zixin's memories, Krune figured out the identity of the creature standing beyond the house. In this world, there were two forms of threat to the inhabitants.
First were the Nightmares, incredibly scary existences that could only be killed by the Imperial Meisters.
Second were the Yin Beasts, denizens of the night that appeared mysteriously to cause disasters. Unlike Nightmares, a Yin Beast could be injured with regular means.
The only problem was the fact that they possessed a tough body, capable of fending off a group of people easily. So, the moment a Yin Beast was spotted, a team of soldiers would be dispatched to kill it.
The beast that pulled Su Daiyu's carriage was also a Yin Beast, one of the few Yin Beasts domesticated by the Su Family.
Even for such a prominent family, it was hard to domesticate Yin Beasts. So, for a regular household, coming across a Yin Beast was a guaranteed death sentence.