Time was of the essence. Even though Xia ruofei could basically confirm that he had grasped the star Fern thorn's distinctive feature that could drop soul essence, he still had to spend a lot of time looking for it as it was very rare.
Based on his current speed, it was highly likely that he would not be able to gather all 10 star Fern thorn soul essence before the end of the mission.
Hence, Xia ruofei did not dare to relax for even a moment. After collecting the star Fern thorn's soul essence, he immediately brought Ling Qingxue along and flew on his flying sword to the nearest star Fern thorn.