As the ancient saying goes, smoke divides into three layers of green above one's head, and the sword cuts a beam of light from one's eyes.
This suggests that when flames burn, they form layers, with the blue layer being the most important. When wielding a sword, it's all about the swordsman's gaze; these are the key aspects.
However, this perspective can be confusing. For instance, the flame's highest temperature is actually the bright yellow outer flame, not the blue inner flame. To resonate with the latter statement can seem contradictory.
This is related to the scientific knowledge level of the ancients, but the fact that flames should be layered is common knowledge known even to ancient people.
Yet this cluster of flame is peculiarly monochromatic.
Instead, it raises an eerie sense of caution in people when encountering something that defies common sense.
All the flames are merging together before Bai Luoyan, becoming one with this monochromatic flame.
