杳无踪迹

Explanation: That traces are not. That disappeared. 　　Source: Ming Shinai "Water Margin" Article 43 back to Li Kui Jiaoniang draft, Yao is no trace, called a few times not. " 　　Examples: Four search, ~. ★ Qing Li Baojia "History of Civilization," the twenty-second back Thesaurus:  silence, like a clay ox entering the sea, be gone like the yellow stork, Yao no story, Yao no trace