此一時，彼一時 (ci2 jat1 si4 bei2 jat1 si4) — times have changed; that was then, this is now in Cantonese
ciˊ²此jatˉ¹一siˎ₄時，beiˊ²彼jatˉ¹一siˎ₄時简 此一时，彼一时
Mandarin Pinyin: ci3 yi1 shi2, bi3 yi1 shi2
Meaning of 此一時，彼一時
nountimes have changed; that was then, this is now