Unfounded suspicion can lead one to imagine dangers or threats that do not exist, causing self-inflicted fear and distress.
他总是疑心生鬼，常常觉得同事在背后说他坏话，其实大家都对他挺好的
He's always letting his suspicions breed ghosts, often feeling that his colleagues are speaking ill of him behind his back, when in reality, everyone thinks highly of him.
Era:
Ancient
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Story:
Once upon a time, there was a man named Juan Shuliang, who was naturally dull-witted and timid.
One moonlit night, as he was hurrying home, he noticed a dark shadow constantly following him. The shadow appeared to change in size, sometimes larger, sometimes smaller. He immediately assumed it was a ghost trailing him, and terrified, he ran home as fast as he could.
Tragically, in his panic, he didn't realize that the 'ghost' was merely his own shadow cast by the moonlight, and he scared himself to death.
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