Yang Mengchen had seen in a medical book in Doctor Luo's study that this flower was called the 'Oblivion Flower', which literally means bidding farewell to the past and starting anew. In reality, its effects were similar to those of the 'Bone Washing Scripture', as consuming even a single petal would increase one's Inner Strength by at least thirty years, no matter the martial arts one practiced, ensuring success with half the effort.
However, after consuming the petal, one would need to sleep for eight hours, and since the petals had a short shelf life, Yang Mengchen decided to first take them back and find a way to make them into pills before administering them to her eight brothers. As for the golden fruit, she genuinely did not recognize it.