Cap 551: Different Meanings of Ghost Town

We arrived in front of the city gates and we can see a part of the walls, clearly, a big battle took place here, the walls were broken with a big hole in place and the city gates which were made of wood as thick as my body seen from the front was completely rotted and splintered. 

The parts of the wall that weren't destroyed were scarred by many different types of attacks, but all we saw were ruins that from a long time ago, there were moss and strange plants growing from the walls, and there were also clearly poisonous mushrooms growing from parts of the rotting gate of the City. 

"Clearly a big battle took place here." (I) 

"There are a lot of rare ingredients around here, it worries me." (Ivan) 

"Like this?" (I) 

"The mosses on the city walls are called ghost mosses, they grow in places with a lot of ectoplasm, this is a substance generated by Spectral-type undead." (Ivan)