"When Destiny Brings the Demon," also known by alternative titles such as "Fish Offer," "Long for Fish," "Offering Fish," "Offering Sailed Fish," or "Offering Salted Fish to Master" (original novel titled "Xiang Shi Zu Xian Shang Xian Yu" by Fu Hua), is a 2025 xianxia romance drama. The story revolves around a character named Liao Ting Yan, who is a modern office worker that suddenly finds herself in the world of cultivation as a disciple of the Qinggutian Sect. She serves a powerful but reclusive Grandmaster named Sima Jiao, who has been sealed in a mountain for 500 years. Over time, they develop a complicated romantic relationship that spans three realms—the fairy palace, the demonic realm, and the human world—while they work to maintain peace. The phrase "Long for Fish" or the association with "salted fish" metaphorically refers to the protagonist's initially apathetic, self-deprecating attitude and lack of ambition, which intriguingly contrasts with the other characters' more intense desires and motives. The story involves themes of love, healing, and redemption across lifetimes, with elements of fantasy and cultivation. The drama has been well-received for its blend of humor and heart in a high fantasy setting.

So, "when destiny brings the demon long for fish" relates to the story's thematic essence where an unlikely and transformative romance develops between a fearsome immortal and a laid-back, indifferent figure (the "salted fish"), symbolizing a unique and gentle connection born out of fate in a world of cultivation and conflict.