Everything Song Wen did appeared perfectly natural and drew no special attention from the Yan Family cultivators aboard the ship.
What none of the Yan Family cultivators noticed was that a small gray bug crawled down from Song Wen's hand resting on the rail and along the ship's outer hull.
It was an ordinary Beetle Gu.
After several months of raising Gu, Song Wen had also summarized some experience.
Although the Black-Bellied Beetle Gu possessed greater combat strength, the aura it emitted was also stronger, making it easier to detect. Ordinary Beetle Gu, though weaker, had equally faint auras, little different from ordinary insects, and were difficult to notice.
With the current strength of Song Wen's seventh level Qi Refining spiritual sense, he could detect an area over a hundred meters away. That distance was not enough to sense the spirit fields.
Yet if he attached his spiritual sense to the Beetle Gu, he could extend his range of perception to more than four hundred meters, enough to sense part of the spirit fields.
Song Wen controlled the Beetle Gu and had it land on the nearest hundred-year Seven-Colored Grass.
At once, with the Beetle Gu's aid, Song Wen's spiritual sense enveloped the Seven-Colored Grass, allowing him to perceive everything about it.
First, its spiritual qi was thin.
The aura of this Seven-Colored Grass felt abnormally faint to Song Wen. It did not resemble a hundred-year spirit herb at all, but more like a spirit herb that was only ten years old.
Feeling that something was strange, Song Wen began examining the Seven-Colored Grass closely.
A moment later, Song Wen was certain that this Seven-Colored Grass was only ten years old.
The seven colors on its leaves and the black patterns along their edges had actually been painted on with