"Kerosene stove makes a fire - there is a lot of cleverness." The flame size and burning time of a kerosene stove depend entirely on the user's fine control of the vent hole. One point more will cause the flames to burn out, while one point less will cause the light to be dim and difficult to sustain. This is a metaphor for people, especially the protagonist Yin Tianshi, who is calm and low-key on the surface, but thoughtful on the inside. Every step is carefully calculated, seeking vitality and warmth for himself and others in the cracks of life.
