noun
constantly changing and unpredictable
A rare yojijukugo describing a situation or phase that shifts constantly and is hard to foresee. Often contrasted with 一虚一実 (いっきょいちじつ), which emphasizes alternating between falsehood and truth.
See also: 一虚一実 (いっきょいちじつ)
「一虚一盈」は、物事が常に変化して予測しにくい様子を表す四字熟語だ。
一虚一盈 is a yojijukugo that describes how things constantly change and are hard to predict.
A yojijukugo composed of 一 (one), 虚 (void, emptiness), 一 (one), and 盈 (fullness, overflow). The exact historical derivation is uncertain; it likely originates from classical Chinese philosophy describing the interplay of emptiness and fullness as a metaphor for unpredictable change.