A person who merely echoes or assents to what others say, without having any independent opinions; a sycophant; a yes-man.
他从来不敢表达自己的真实想法，在团队中总是扮演着应声虫的角色。
He never dares to express his true thoughts, always playing the role of an echo worm in the team.
Era:
Ancient
Frequency:
Story:
It is said that a scholar in Luoyang suffered from an 'echoing disease.' As soon as he spoke, an echo would immediately sound from his throat.
He consulted the famous physician Zhang Fuzhong, who found this strange and pondered it day and night until he finally devised a treatment.
Zhang Fuzhong immediately had him read from the 'Compendium of Materia Medica.' The scholar kept echoing, but when he came across parts that frightened him, the echo stopped.
Based on this observation, Zhang Fuzhong promptly prescribed medicine, and the scholar was indeed cured.
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