Given Yan Ao's current mental strength, he could condense at most two sigils in a single night. Last night, before setting out, aside from condensing a Vajra Sigil, he had additionally condensed a Hou Feng Sigil.
Unlike the Vajra Sigil, which could strengthen physical power, the Hou Feng Sigil allowed Yan Ao to control the wind element. The cyan beam of light just fired was precisely a Wind Arrow shot using the power of the Hou Feng Sigil.
However, seeing that a single arrow had failed to destroy the earthen jar, Yan Ao inwardly cursed his bad luck.
Chapter 303