Also known as Chang Qingjing Jing, Classic of Purity and Calmness, Pure and Calm Sutra, Ch'ing-ching-ching, Ch'ing-ching Ching, Chang Ch'ing-ching Ching, Taishang Laojun Shuochang Qingjing Jing, T'ai-shang Lao-chün Shuo-chang Ch'ing-ching Ching
Taoist text traditionally ascribed to the Divine Laozi (Laojun)
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).