Red Earth Symbol.

Red earth was the second most difficult symbol to master after the fire. The symbol was banished after the war of the Drones. Dark magic from the Drones is based mostly on the red earth symbol. Among the four lords, only Lord Hogan mastered this element. Despite prince Zeroan being a black magician, he failed to master the symbol. It was regarded as the most difficult element since it could turn you into a drone if not mastered properly. 

Zyda and Rolam sought Hylie as he had more knowledge compared to them. They found Hylie in the training room, practising with Yurie. As soon as they felt their presence, they stopped training and glanced at the two panting siblings who crouched on their knees. After a five minutes break, Zyda told her friends about her new quest. At first, Hylie disagreed to help her but after a few minutes of Zyda's continuous nagging, he finally accepted. The four friends agreed to meet in the evening, so each of them headed to their quarters to rest.