What soil can produce gengjin best?

in the sixties, one's own soil can produce heptyl gold, and it is affectionate, and so can one's own soil, but in the unwilling sixties, one's own soil can produce heptyl gold, and the other's own soil can produce heptyl gold, but in the unwilling sixties, one's own soil can produce heptyl gold, and it is affectionate, and one's own soil can also produce heptyl gold.