Schematic drawing of MHD slow‐ and fast‐mode shock heating due to reconnection. While the slow shock propagates from the turbulent region, the newly reconnected loop shrinks with the Alfvén speed toward the lower piled loops. Within the shrinking loop, the heat conduction front propagates as far as the points where the loop crosses the thick solid lines. After τ_heat (or τ_A), the loop reaches the closed lower lying loops, where a fast shock is produced and heats plasmas in the neighborhood.