Others retire, raise grandsons and children in the square dance. Pei Ye retires, krypton gold raises cubs. Before krypton gold: trash games, cheating krypton is not concerned. After krypton gold: it is so delicious! I can not only krypton, but also liver! As for raising paper, it can cultivate sentiment and enrich the boring life after retirement. After raising it well, it can not only have feelings, but also... emmm...