Known in China since Neolithic times, there recognizable as a simplification of the frog motif. From extant pieces also connected to "thunder" which all somehow refer back to "water". Later it became the Buddhist symbol for the "Heart of Buddha". In China read as "wan" meaning "ten thousand". Seen as a symbol of endless longevity, "Wan shou".
In Buddhism the Swastika represents the Heart of the Buddha Shakyamuni, resignation of spirit, all happiness that humanity desires, mind, infinity, all, many and "ten thousand".