It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://blog-aff86pzun.mit-edu.top/post/1475296803

  1. <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "blog-aff86pzun.mit-edu.top",cType: 'managed',cRay: '911052175dd2d6ef',cH: 'HQ9zxQIh.pu19iCuZ2rbdajuM0Jx9V5L427qlwz17E8-1739402545-1.2.1.1-USXk58J9EeRoPk7F2FW6igu3JlzjPlQ0CKbgEqQS8GEpYXqBeKAjHJErz9gIzbN4',cUPMDTk: "\/post\/1475296803?__cf_chl_tk=OdBgCVA30nE_HZXbe9z1XwtFbGfNDAWQ.x9m_Del8mg-1739402545-1.0.1.1-mh1IVGr7Oo8JM6qJq10H3_SHIVNFROvXnuNEjP8.eNg",cFPWv: 'b',cITimeS: '1739402545',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1475296803?__cf_chl_f_tk=OdBgCVA30nE_HZXbe9z1XwtFbGfNDAWQ.x9m_Del8mg-1739402545-1.0.1.1-mh1IVGr7Oo8JM6qJq10H3_SHIVNFROvXnuNEjP8.eNg",md: "cdke8jEor0GPH6yzXKgxCSrABclXXEJjGV8abb8IwS0-1739402545-1.2.1.1-JbgdiJlyLNE1TymXZF5EMUYbHxLLqDk4IBVCPHXoVbdtVBG0r4edcqKNqS.0698_GBmPkOD4NQIPHVyLJqkERiByqLI4hSnqVsoto6YBokdE10kQ3HCi8MIw.Ti_rZvbfHou7ljG3FIDAzHjg8EbcvcMrHZ2tOp3ouQIE40_Be8cmD9KlLa1TCHychRZetO0VfH8uFglaqGuzK2Jj1AlBtsbtpCID3wWJxk02LY_IY0MSM5Tox8O6kfPfWYfxU.9c.LRWoJ4q8MI_KaoJFQzARJN3A9UYqdaDdwMw8oLCm5TOyCeazhusWzRE.jqEbQxLVfF3zG95QofLCJk65LExRXS9d1rwbdGvY9Ml5_KXrIyppmUVq.txPpq0nFtQENuT1MwD52FIdhcXTW6EmqCzQaTTPSgcDWKqplzIM2cmASeF5KWR82BfNB8awBCZ8DXeoOSjDa0Rz.scF05x3wc0wCp2tkOgOg2Np3tcVKnJ05JfjgeLxskLZotezBi.6vPb6xMSiyZOE328t9iuMs148m_tbXDqrbs_wxk8V5L983OWI7VabwhnZabjwwv09YjsPgnXiI4HvTrNyFBMPLxDbIinve3hmifeu0NMBmpWpUUEFHCaA.GwLFgT0qGZA.tJZ._V9usN2iIdZg6aIzu67Z3beSyN3o0iTx2S01uJ6J_FMDy4MesXYG3rFMT1tw8nhl95.D_0FG37j3wwanch8ke_pTwc1of0S6Wekhu4qAhCjp8VBXBOhlXlYFWkphnsipFerdRHNaGIiyqD57S.uAUr3VEgiUd7LdJnlEXj2arOl7ki2khI9Om.UqJI.F_UPiNzCKjs1bvsoTYgP36LLVtDLx1pOJ14aWWbeUVekILYP.636Pqj3xH_pIArMRhFjPN73DaIgaWVJ.Tnhg9tf_awOYgfLhcbBsTdaNgSgb0Jc56bFeeE2zVmlrMVoMnMyzu7GSDs_mi4aoiXlLe5DczICBJ_oZPpng3ZpZ_mdOPyJ9_gtyMlfPmhQq7.1EFzus8QatHvs79OPKP68hcrMRf8.74YCyN1KD68ZfOoudXtXj4TGDyz.acLDiy8_JOzLbPZRiG8STiIgaP_6iKhfgqQOaeaUZZSLWkd54RD9no4XcFKBUkLewjX700ShA2y8BGPpKyb2hohmfPurxjc_WDiwv6xZ.WHNorQ8LKenRtSEmqN4oAUnc5YgqG4fnor88dqifd5LAyz1Yfo.4UKcZjQcrhIz54BZ6b9Md6iyWVvrdh8pxMVRYGICObxnBfiDCVVKS_PmviGpfCNxHPEmQIQZh1DThd39dBJPWDJY8O3dw8Nd0hau0zcZJHiBDb6x_rvgkxhTAXT6XwEZwkm1AkzCf0vuOJjb3vphe5JasOw91l8lDjW75l1qSDP2pyCgqYwPuBcfi2gI_ccOBO0bqlTw3srmBZpeXBYWQ74XGS84ZcnNjIeoHambGZEJ9FmI6xp5KVs3IqKkVdyo4rBdYCtggTQmH4IXY2PwXpr1zfGwJf6WsmEW2ym7LrSQB7nFPly3dBSKUDFV5BpYFpZJk54EGVU9scFZafd90Ul95VqlKOJqkG7hRTxDQyWpkuyllYHT35VOesjtqGUWnKDxbs1kfh6uRc.Q1iUuNWrP29fhuRc7s9mNX2B1crDBHC0ajz5728DsdSQJ79AlAKXND_hrt.Y3jKo4rr.30x7Cb37YDKCSQcyAdfLq61gEoL0iFTQJ4QI4mmi6hWGzwLYzwFGg6ZCNkfePNSjJmN5PptmbJKBGwZ..zbApBT6wHnfEyhKEo5C1m2xOUTrX_l8ybgULpiZzykkOtuI3Yt8jjh9p99OldG5xuc.LFA8cQte_h9mFJQwYrMqzjWcHU0BBPMWBmeRKnlDW88cMr.6tzDPG.bs2eSmNiXLvlRVpoLG49QtvPum786OiYCA3a83z6pQvIiW53TcDDNbtlDzVc4iTZQt8SNW3gp1OwV8Dyao9ORdAYzq7ODsnTE0Cg1WEllYquZVknjogruyzosZ.jNhtV_PYgV_hAOCKk8dEiyO3_.X0kxu_JHhp5p9P5SdzEwsy9mNNlx32Rk6GO5k.jSvIhe0Xp.TSyPDhQ.yJxgvZfrEdThXOcEnQuJ1joe5x6UUA.PEdGA3oUN78a3CzUnFOrNxYrLLx2pzWVTrXs2VOZYEPhPM8v1OvNNefVjOeU.R2WOztvWMo6sdrks4lTYLIaXf2YZn4b2cbr8qAWV",mdrd: "Zoxf2MQs1nKwB8qpqCNhQIkJ6roN00oqCSmMtRMY3uk-1739402545-1.2.1.1-q6_jFeYNpFWXT1WxxL5hRVRWFPvhiw3UV3XsoEEwl5P8a1K7Rl8YDqkHikN6ck0ocsisvTgpO8k8ZzLIui28FxejeynImHakkjCsvE4._UvmIF1k4wpGfA5uIp5ZQg3FLiibvaucCFCg0WzbbD7Oa_nLJQfFrPwS8Jer8.VHXqhkbys6WW5uf25Fdcx75vdH6N9N1F4VMHX5B3IYlaJzPIfROUuFMMvagiStDx5AADLuP4WtWpzga8HGpWRU6HVJR6AuuWYlLF0ec38DHlGNm5278Dagtf70Ga61SQNTE1elCZEfnIk3WJgAp0kbQ4_aq54EDFBP3.lbaYD8pJi2fv1OZgYTi76_Jioom91Wax9u1ApPChzYgArUj4Z7DJDywswu1.IPDlZUplglbyoqhmP5fV.CuI0zJQVxINDSLU8nf6VcGhMUoHxNhpu.cRwLxNp5bN.m646S2y5NieOrcM.t6t8EF2H3f7dYMQZJ5cSU8V8VaTwwEI_UnzdE5Gw0kHToqImbelXBafogfP0wSf8uU7SFUbtbdrexYcy41rE0lpkxR6c_DNnDj3K9HDo7k8LVDmxxPJSqHDo1aKo857NrOtCQpFCKBGPU3CAKtteePDYLd07tRURYp5CJDK2jBSzAEJqa_0PpilPsb6pnVoY52TKToAC8D4dZAvbZesoFARAIbcjUnAqxllM9HfGXdRJT4jXXtSzMwrlP7o8nT2bwPgBlkOeuhbllqOZ_e2RFHowncUwL1PwwXENdtWtYmA3FIc802_Xzd6YKCoYwhqDm9Wf5dRai1ndzIeamYVrd2KrWVl0o8BvV1F9SrzxqScg.BBiVj9P9hMf4tZVvaL42bzxcd8IK632W05T2Tf7DgI_3dFbzKsU9K1XpFPhdV7hN2AGofhxIFPti9LLb0I8QT9alumKoa718vwjjQ11S4NmfjynCC5hzHE52aWZM4301xcygcMUHeZHSFkcoe9e_N2gVCmW7MlfqJO_ZwiHcPWOVbhaEO6X7mv_O0CRUhHyR2uszi2q.Pqhq60X5_qxImaJPwfDYJPJN5XLHpI.2o9N_UBfWBDYQY2KwAwCxlGlfNQ2YaZfxqcFF_VtGjM5cOqY7gevaa7imgEDglHHBSf.KZInlH2ZGWrQ00c5T802daDLTkbZ6teVK5OoCURSE48YkRuoRp_l8g0LrZ9ouTtu7PsjCc5JlhOb1a0nNEglrnBrAot5hlwNFeNav9fP5s32zcL3h3kRfNbM91DZRAu66M63kpw2L6yTAx_sgIXoaCHaGUjuIm9H5HiOU3kchNXMuHsEWtGKz5mkvOO_6tj04n7O.s8wAhB_5XvTQuVyEJ9o4v.Pe4Cf7CX0p0ckNHbu2C_FIzC4hitR6N0nfUp8blfaMKlRSdj9IreeCCEtTZx91oklKaOXgLx0HR1OoT3J.iXD1jtUIZ2CWF5chNE.BEVFOMADG409E3mjn7XK_jrDK7NKQP1cQxkVtU4b8iqOqmbrZ_OUwdVq.OeZCDzt5Iv7xtUREeNhU4L9y4nApwEYQWGlXOb457bA2Cgp7DXq26An3_3g.R3pKzhzkOR8iztl5tAdU5sdNqdCgYWaFshIFCVMNMulZ9vV2WpBdF.A2QOMZ2pqkIeraHTxqdzDv5Wz4dFi0eJr82bbW7xE.grVf9BkXd4rWJWURDVrQlImjSF0swwFjEYfuHgJEFK1Ey4P7zPXd88JLxspYdaAzNbEWBVZcqUoUFV41KaZomUO9.X64V.RojbJcz.AfW87pIEuETngS.Wxd_f4QhHWNq8rF_cFdRczmKm2jiz8YSsh0zPPYVK904XdUoGw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=911052175dd2d6ef';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/1475296803?__cf_chl_rt_tk=OdBgCVA30nE_HZXbe9z1XwtFbGfNDAWQ.x9m_Del8mg-1739402545-1.0.1.1-mh1IVGr7Oo8JM6qJq10H3_SHIVNFROvXnuNEjP8.eNg" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda