Gao Yuan understood each word Yang Yi said, and he also fully grasped each one Xinghe mentioned; he, of course, understood what their words meant when linked together.
As for Morse code and such, Gao Yuan was naturally not unfamiliar with it.
But the question was, on what grounds could Yang Yi be so sure that the Serpent People and the Graycloaks were using Morse code to communicate?
Or rather, why was it that Yang Yi realized the Serpent People and Graycloaks were using Morse code to communicate, and others couldn't think of it?
Murphy was a Sanitation Worker, and so was Larry; now Larry was coerced into switching sides, but it was the Serpent People who forced him because Sanitation Workers couldn't directly contact the Serpent People. If the Serpent People were to attack, it would be a full-on assault—the kind that wipes out everyone.