https://songyanyu.r-universe.dev/dycdtoolshttps://songyanyu.r-universe.dev/api/packages/dycdtoolshttps://songyanyu.r-universe.dev/dycdtools/dycdtools.pdfhttps://songyanyu.r-universe.dev/dycdtools/doc/manual.htmlhttps://songyanyu.r-universe.dev/dycdtools/NEWShttps://songyanyu.r-universe.dev/dycdtools/NEWS.txthttps://songyanyu.r-universe.dev/dycdtools/citationhttps://songyanyu.r-universe.dev/dycdtools/citation.txthttps://songyanyu.r-universe.dev/dycdtools/citation.cff