Disclaimer: I am not the original witness. I am reposting and translating a Chinese-language social media post that has since been deleted. The images attached here are saved copies/screenshots and may have been compressed. I cannot independently verify the witness’s identity, academic background, exact location, date, metadata, or the authenticity of the original files. I am posting this mainly to ask whether anyone can identify the object or provide a plausible conventional explanation. Bac...