The specific meaning is not specified in detail, and the whole sentence should be: Tao comes from experience, and the heart is fake; Hot copper furnace, the heart is in front of the emperor; Looking forward to the true spirit, Xian Pei is in the porch; Your minister announced that the trial lasted nine days.
This sentence should be a fragrant spectrum and a formula.
Its main idea should be: I expressed my wishes to heaven through this incense burner with sincere heart; The true spirit in the sky saw my piety and came down in person to convey my wish to heaven.
Therefore, I think that the meaning of "Xian Xuan" should mean that the ring of "Ling Zhen" appears here (Xuan), which means that the real spirit is coming soon.