He who lives under another's roof must do as he is told; dependent on someone and therefore obliged to obey them.
小李现在急需这笔投资，所以在他檐下走，怎敢不低头，只能暂时忍耐一下对方的无理要求。
Xiao Li is in urgent need of this investment, so as he is dependent on them, he has no choice but to comply, only able to temporarily tolerate the other party's unreasonable demands.
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