QSE cluster motion in the chart of nuclides for the transition region between α-rich and α n-rich freeze-outs. The QSE cluster remnant bypasses the isotopes of the second family near the magic number 28, and condenses around the corresponding isotopes near the magic number 50. Each colored line corresponds to a nuclear reaction and indicates the level of nuclear flow transferred between the isotopes connected. Normalized flows ϕ are colored black for 0 ⩽ ϕ < 0.01, navy for 0.01 ⩽ ϕ < 0.05, blue for 0.05 ⩽ ϕ < 0.1, cyan for 0.1 ⩽ ϕ < 0.4, green for 0.4 ⩽ ϕ < 0.8, red for 0.8 ⩽ ϕ < 1.0, and yellow for ϕ = 1.0. Small ϕ values indicate reactions in equilibrium, while ϕ = 1.0 implies pure one-way nuclear flow transfer.