And for the lighting of neon sign in scene is actually not a lighting source, it is a texture with blackbody emission. The advantage is that a blackbody emission could create a glow effect. Compare to realistic neon sign, it should included three colour of layers, the core part in white, the stoke in pink and the outward stroke in soft pink blurry colour. So I am working on neon sign to create a glow effect hopefully similar to the reference.

Not only adjusting the blackbody emission to create this effect, but also add a post processing effect in Octane camera to enhance the bloom effect, which is the key element for the burry outward stroke in neon and glare power if needed.