What structure is used in we laughed so hard we cried but finally everyone calmed down?

The structure used in the phrase "we laughed so hard we cried but finally everyone calmed down" combines a cause-and-effect relationship with a contrasting element. The initial part conveys a humorous and intense emotional experience, while the latter part introduces a shift to a calmer state. This juxtaposition effectively highlights the transition from a peak emotional moment to resolution.