Distribution of metallicity for stars above and below the desert in a specific range of masses. Left panel includes only stars with 1.10 ± 0.05 M_⊙, and the right panel shows stars with 1.20 ± 0.05 M_⊙. We can see that stars above the desert are consistently more metal rich than those below at the same mass. As such, these two groups of stars are different in their fundamental properties, and no further attempts can be made to find the origin of thesubgiants with low Li in the stars above the desert, with high Li abundances.