In Yun Xiaoman's house, there was actually a Purplish Blue Flower. This was a pleasant surprise. If Mo Wen could get his hands on it, he could bring out its maximum potential. The Purplish Blue Flower was considered as a divine ingredient in medicine, primarily due to its expansive uses. Many high grade medicinal recipes required the use of the Purplish Blue Flower.
The Purplish Blue Flower also had immeasurable benefits for martial art practitioners in cultivation. Based on Mo Wen's knowledge, the flower could be used to refine many cultivation increasing pills. He knew of one of these refining methods, which had very strong effects, enough to raise his current cultivation by another level.
The Purplish Blue Flower in Yun Xiaoman's house was possibly a fully matured one. Otherwise, a Purplish Blue Flower which had not fully matured, if constantly came in contact with when handling, would not be able to so swiftly poison Yun Xiaoman's father.