LIBRA GEM

LUO YAN grinned widely when he saw the two.  Earlier, before he decided to use the [Shadow Cage], he had contacted Eclipse through telepathy. 

When Eclipse still couldn't transform to his humanoid form, their only way of communication was through that.  So, whenever they did grind for experience together, he had always tried to test the distance on which their telepathy worked.  And he discovered by many trials and errors that the limit of their telepathic range was about five kilometers. 

But when Eclipse was finally able to transform into a humanoid form, their telepathic communication also evolved in a way.  The distance they could communicate varied depending on the size of the map they were on.  Because as long as they were on the same map, they could communicate telepathically.  So, it wasn't a problem connecting to the other.