When Huo Sining entered the stone cave, she faintly sensed light emanating from within, but at that time, her attention was preoccupied with the hot spring and the abalones, so she didn't notice where the light was coming from.
It wasn't until she approached the several plants by the waterfall that Huo Sining discovered that the light inside the cave was actually being emitted by these plants.
In the pitch-dark cave, beneath the hot spring waterfall, the leaves of these plants slowly unfurled on the water's surface, as round as the palm of a hand, and the closed buds were slowly exuding streaks of golden light in the night.
At first, Huo Sining thought she was seeing things and hastily turned off her emergency light. To her surprise, with the light off, the golden glow from the plants became even more conspicuous.