Black pus sprayed out.
The tumor in the skinny hand was tossed up and down.
The left hand stretched forward, pointing at the train, slowly moving in the same direction, while the right hand reached back; because of the hunched posture, the eyes struggled to look upwards to see the train's direction clearly.
With a whooshing sound, the reverse-jointed arm threw the tumor.
"Bang!"
The tumor smashed onto the train; in an instant, a handful of brown-green pus splattered out, completely obscuring the side windows.
All around, the metal armor started bubbling.
But with the corrosion speed of a Tier One Earth Ghost, it might not be able to penetrate a 15mm steel plate even given a week.
Let alone, the armor at the front of the train is even thicker than 27mm.
Yet the most notable trait of this thing is its disgusting nature; that pus not only corrodes but also carries an effect like marking information.
To humans, it smells foul, but to zombies, it's equivalent to a signal flare.
