一場歡喜一場空 (jat1 coeng4 fun1 hei2 jat1 coeng4 hung1) — you think something good is going to happen, but then you're disappointed because your expectations are not fulfilled in Cantonese
jatˉ¹一coengˎ₄場funˉ¹歡heiˊ²喜jatˉ¹一coengˎ₄場hungˉ¹空简 一场欢喜一场空
Mandarin Pinyin: yi1 chang3 huan1 xi3 yi1 chang2 kong1
Meaning of 一場歡喜一場空
nounyou think something good is going to happen, but then you're disappointed because your expectations are not fulfilled
nounto end in disappointment after high hopes given