As for Lin Li-cheng, Lei's method is too mythical; and Ts'ai's story can be explained scientifically, because the more dense the wood, the more resonant the cracking sound when the resin is dissipated under high temperatures.
對林立正而言，雷威的方法太過傳奇；而蔡邕的故事，以科學方法來分析，是因木材遇高溫樹脂收縮而爆裂，而密度愈高者迸裂聲愈洪亮，自然是制琴的好材料。