Riven and Mike fell into silence, while Lin Yu'an remained as calm as a Hunter.
He did not look at the large sea map but instead picked up the magnifying glass once more, focusing entirely on the miniature map itself and the string of mysterious coordinates.
"No," he slowly began, his voice low but instantly capturing the attention of the two, "I think it's not that the coordinates are wrong, but rather... we're using the wrong ruler."
"Ruler?" Mike and Riven looked at him, confused.
Lin Yu'an pointed at the coin, "The latitude and longitude coordinate system we are using now is based on the Prime Meridian of the Greenwich Observatory in the United Kingdom as the 0-degree meridian."
"This standard was not widely accepted internationally until the end of the 19th century. But this coin and the map might have originated in the early 18th century."
