A trusted confidant; an intimate associate privy to one's secrets or confidential matters.
他不仅是我的得力助手，更是我的入幕之宾，许多重要的家庭决定都会听取他的意见。
He is not only my capable assistant but also my trusted confidant; I consult him on many important family decisions.
Era:
Ancient
Frequency:
Synonym:
Story:
During the Jin Dynasty, General Huan Wen became arrogant due to his distinguished military achievements. He first deposed Emperor Haixi and then enthroned Emperor Jinwen. Later, he harbored ambitions to usurp the throne. He rallied people like Xi Chao to his side.
When he summoned his political rival, Xie An, he arranged for Xi Chao to hide behind a curtain to eavesdrop on their conversation.
However, a gust of wind blew open the curtain, revealing Xi Chao. Xie An, with a touch of humor, referred to him as "a guest behind the curtain," implying he was a trusted confidant privy to secret counsels.
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