I Got a Cat from a Loot Box, and You’re Telling Me It’s a White Tiger?

(Treasure hunting for all, no harem, spiritual qi revival, urban cultivation) “Breaking news! Jingzhou City has gone on Level One Alert. A female CEO opened a box and released a million corpse monsters. The entire city is now on Level One Alert, and the Night Watchers of Handong Prefecture have all been deployed…” “Latest news: Yesterday morning, a man surnamed Hu in Kunshan Prefecture opened a high-grade treasure chest and found a nine-story Demon Refining Pagoda. In a single day, he captured thirty-eight female demons. Truly terrifying!” “Warning! Warning! Someone in the north of the city opened a box and released a demon fox. It can shapeshift into a human, and it loves killing people and taking their hearts. Residents are advised to stay alert. If you notice anyone acting strangely, please contact…” … Five years ago, treasure chests fell from the sky. Everyone on Blue Star could obtain one, and opening it might yield a treasure or spirit fruit, or unleash a demon or corpse monster. Gu Ming looked at the three treasure chests in his storage space. When he took them out, he was surprised to find that he could see prompts. "Treasure Chest One" [There’s an utterly ordinary little cat inside. It poses no threat to you.] "Treasure Chest Two" [There’s a corpse monster inside. Release it, and it’ll see you as food and tear your heart right out.] "Treasure Chest Three" [A golden core is hidden inside. It’s an exceptionally rare treasure.] (The synopsis falls short. Please read the novel itself.)