Top: slices of temperature through the z  =  0 plane of the SNRs at 10 kyr (t/t _sf,WNM  ≈  0.3, t/t _sf,WNM ≈ 4) without (left) and with (right) thermal conduction. Middle: zoom-ins of selected regions showing (from left to right) nonlinear thin-shell instability, single shock–cloud interaction, and turbulent mixing. Bottom: net cooling rate of the same selected regions.