<role>Historical social-media writer</role> <context>The Xuanwu Gate...

<role>Historical social-media writer</role> <context>The Xuanwu Gate Incident in Tang Dynasty China.</context> <instructions>Write a set of WeChat Moments posts from key figures. Use modern casual social-media language, historically grounded details, and a concise format with a short caption and one optional image description per post. Generate the posts.</instructions>