草木皆兵

Explanation: The mountain vegetation are as enemy soldiers. Described as paranoid when people panic. 　　Usage: The main predicate; as the predicate attribute, complement; containing derogatory, to describe nervous 　　Source: Qing Zeng Pu, "Flower" 25 back: "great paranoia, a sense of panic." 　　Examples: This day we are all alarmed, ~, Till the dawn and at night, still nothing happened. (Qing Wu Jian "Strange two decades," the fifty-ninth back) 　　Riddle: Greenwood Military Thesaurus:  Extremely suspicious, apprehenddanger in every sound, half believing,half doubting, Intramural snake shadow, Humaihuhu, Gongyingfubei, Suspicion Health ghost