藏踪蹑迹

Explanation: Chase: Light the way to go on foot. Hidden track, quietly action. 　　Usage: Joint type; as predicate; containing derogatory 　　Source: Ming Shinai "Water Margin" section 64 back: "Let us now turn to lead three hundred Zhang Heng, from the middle of the reed, Tibetan track chase track, until the Village side, poke antlers, Jingben in the military." Thesaurus:  Possession of secret trace trace