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-aff57nx3r.mit-edu.top/post/7614528903

  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,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);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-aff57nx3r.mit-edu.top",cType: 'managed',cRay: '90f7e0753a24d64c',cH: 'ufuYrc6fbKi7fKclIDQlaaKGl2flQkouve8r9aMrdu4-1739146233-1.2.1.1-D9JpN_b.lpiJ80r0EbulybQhHlglPqCgvk7CZc3LGmU1TROpaUn_JvQIdTOWUkoS',cUPMDTk: "\/post\/7614528903?__cf_chl_tk=Wt8UG9oYZjDofPTcX1JgQdBfN0i0dHKoiTejWIowxwE-1739146233-1.0.1.1-fcHSSAGYJcexfyWTTNiCLHCLFvE3Qp4bzxqJBkX9RbY",cFPWv: 'g',cITimeS: '1739146233',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7614528903?__cf_chl_f_tk=Wt8UG9oYZjDofPTcX1JgQdBfN0i0dHKoiTejWIowxwE-1739146233-1.0.1.1-fcHSSAGYJcexfyWTTNiCLHCLFvE3Qp4bzxqJBkX9RbY",md: "6pcV5gY3rmaehQ9kKQGrzSRmeZMNPSRSny_kqE2TupY-1739146233-1.2.1.1-kpMnnbYw3LBOS10SGz8AQmm2wT6K77h2j6y8DXDTt5fpzXhGeoH_hOFlbX7HCoRcSrKdGVg35To_Kp2R0F8uH9ZvfmoTxpiRnmxoOWgJwGNRbMsb30Zswe7BqfvFa2OwklOMGr0hVh5BZPwCYJigTIHFo6lKr.wetBm8xUGxjgHW6_RHr4kwTcZO7sFNkiUWrweWiBUYLmTn1heCxFjgichzSRYH47EkqKcTPUcMHsfpcia.m3d9Fgq2rL6uJOQ5oh579EJy5lNx5Ih8ExdP3FcxWLshFeYRC3HnxI3vIZYRx8pkftketfMGufxr25vtUM8FnboVMmGEbQCU3vl9OHx3esJmUYkYFXqo8IJSNPsPlHJ4e9vsUTsWdAK9ACtYKVdVqstn3qeHge47TAgEjr692XC7HVRNFtx.3ccL.biusCyiZTvoV97oBPA.vZQPiGE6r.WNfHAnX8E4XG.xsBX88EKUMU3gUufxMWf2ByLLBZ.gG6gPTnWjgkEyUItvphm_h1LY5wWs20yoq7L37RsxchK.XGw1GdEATXh5hFWjDSJwS5XDhhTJ7gieaWWVOifRGHP62yaPxh.l4VhWhAJ5XtqhpJelSBcPFeXfsiaTEIFf4GFPP3PAV2_.7b9RMJIx.sNjnL3aoCLYEqemuGdFMLHHN7emkQf4DNfgkSPgvLAFI0Vzw0_anaaAM1akbDC38gpI50vrXALFEZ8b9t4Wz3iSbOeSZlI0aT0EvdEiwXTbeAFqb4Prpi8ANgF988gTr_abHCp0y3jSrmTZn73nSMTPmViIL1PD08YAQOLN_wmnd0zRZEtp1BDRFMfCPCdWLUZEB_z9WjSe.21lbCNBQ.bl7EhoJKZPGpTN4zOoiJLFFipdwj5hDyiP45htaAw8Hr2Pxg46IhHlo0vey7QL5xcOqNO7kG71.0_J_gr9YdUYNlIDvfCbSkz7lv2LK3BEui63owc8DkGu3LHEArJn.8LdgUMuTPNECMoGmRlxBwtfU9Hx4JtcQM6t3HRCqD8wIv2NDGjLD_YIeih8WgAXWxjochl16PrTRDfOG0GZNBQu.smmmOQKTqzGwGD1Dxj2N4NjcEw_56Kd.IX7zb03Col5KUxxL1.Ay7FNmrlY_D2BUZqsSjG3TFyjpAk6cu27iGL47xaosP3btJzLFzwUDSgJYcFpkiDAoOV.Znb.w58NrawNlMuqDQJw3UfT2lhnCRNH3Erx5QzSFrZnAlS4O0zoq5c50bhJ9jMLzYVW4omnuJmohKqE6DuU5gKtvg6I7OgNJKr1hRTPprnf88hIOW3z4wc3Qotct1psOUaPNo3crUjwRabKR8iUEUZeCk7M7JbIDcWl_M6j3Q8bdk7_6ZcGsLvDl0e0O14uV_.EPgWmyeLO1kUr.ske1zLvO9_Sc0CC01449Kp4yaX02USeurRhWlE6aEKu4RAeKo2iPNKacH1aVln9L2ouGfakpqZC9tYmbq._7ln1k8fxbqyTWJL4r1Qkix0rRcJmlvYuYmGG2m5zyR5aWbJCZk4o12fhXaGKxEXzM3.0qsVoDIi_Bdpl1JN_DwFDaEnS8RatYpXhiluUHIFCtBWZLhivp2YVQcNKcdKjFK4LnjDg6NQCAhxnUVU9eIPJCgPI38lE68zw4y45tvfGZXztuzqXKoKhSkwVLSn65R7lpgdPkEFw_qDYIEQQF.Go2yYHG0powEEo0clvhOxypfdy.eBuCtICZkuUK0_z_p8tkoLj17JgXQZt36lJWfH89j1vZtDbB6VUc_w0yjzLngY5Py.Dya0adYzvHaNHQeBhy5DsvfZGuRe2IbiHuP8MTdmVQbl.S_MZIGGIPPcdV6gTAxOjeBOLEVSr7FlZu4A3IjLU.6PpF930o9_yizQ1KDG3yVwoBspouSoldI0XHXSLGANbmQ_pz11QAXgjFKG3zicNH4Q6JzUE_itpviYyMPXxGXi0fX5tW0PW6hmYMXCSQ5k7hLVNBkrd6vbUfPyG7xDVxgpA9j9ZobOM2lCfenT8KYQ85hcWAUF5cSffbiqqzuP1oBVrg8ZMOXu37ZyQz9CUcl8ayEIGNLz0VeFnWSdqEkCu8.XDqdSjCyZ1pL22j2M7xIpp6vgb9eI_n4C2PSOndX0bb97bTLIdFDGNV.D.z2f4DybYJcHDeB6Jj495fQR3SrA3NPKxnpZ3PqXy.Yh8lcJM752UE_hCruvWCH5uHJGVPunaiwELQJcBE1tLRd65",mdrd: "QZuazQ8bNgHfrA.MdBRdfvEBatOccFnl29MznJeSSaY-1739146233-1.2.1.1-Xq4oKky6jUrCv.AFwBSeGPwDdN6YE8bRcWfbtAV8G9AxRUZl5PcysTGvUoC7HQ8e2OoXOsJQz6af2voo3T0ccrMHeohti_o.0AAjkygf6JhIJG6cba3uW5QeB5r07c1kzI2FN4WMo2gaO_nsbWkDfmBFRbOjESvW3EtKSSnF9i2KEj_ACl06_Xb6IGcnQZKuyjBP.aktKR7qcin3s1kJ66SHi5NQoba7K3r95VS0hYBwtkklnONcbRSuLNbEkM96RgEorItgcR0Suun_rKtBnxGVVT_9UFeVp5nzxUAU.tvfrh57FqectSiDs34pi.MT1aCQLRwubHjRClcuwb33YxgWEPBGMDmY1b_e80OR.Kyy.KcaU_LOUqu4yFd96ecOOXD_yYo0Qxi5YcE3Zg16mWKH_urUOS4ygeOV39wRfAqk4bB5inkcdQ1jHtfDKBdXA_itRMzG4TIzIwwYw7mNE9wsFjxgF.ZimOmpgyx6ujw5YRi7fdQ7RbR5pYuZzw5e._VKFTaxK4JtVcuHqBrEUh_qMEZnBtCiNOH7I2Q0Vx7qS4YtBxz.fdELXRm81yyx1nAYQzviQbkfZq1VoYRKQKFXQkBukijOjBxJfJBEOIjbX8_Yobw0TDgTIVgC3znmw10jo56HAopOTGq5g1E9F2Nn.8EB8gukUyYBxn_uIJZhH8c2_vJ1Y6NUuxfELBBVUWNlVodkMeS._2RiPluzTe1oyMNSP0uFyCNe2GTLRo2joxNrvA2SlQ0.ai0QRNWbxI8QZqT4Lc7..0YSiFPH2tZMvGtS3KqmmhI_T5u8bfN3Uv6SJApABtqQzs62metYdv4JfW.zd7CgXGqDWdT9QmpCY4H6CmzAkPo8qOzpnwI7TEKHj5mYzpMsM1nVdJ7zXP5gUnCzF136ydNjA2CFymT6cHOY957RTIJajTB9jims0GIFzLoyw7UBUJcC4VxVt0rUTp9PPU5LBLyidx0tmeWa9QY.jS471noaq3Z45ji12a3UICpYMaqHGZkpu8R0kGDiZgoyOljGyyyBmSwarYlZoLD7F7YJ9XJnZ6p2tjjbTBX75iDDc378w.FuSFWGD.UXl0Fj0McVVXzhcKStIKQamhuca78fMh..Ba47K0KppK60XU6hKnL4dhpdlxySw0sKsFYhhDvHiw_.Stcrp_V6bmDOyp2p8LVf.tXGc2cM_hORafMO2qbd_i5LywPKlNabu0tRrkbY1nVQZGHgTMM8hPmoG3aiVYeSYfjEnkekr0jFpww3.vktG.Ocs828OyZsxFXNlMRvH.ctsnyc8Fu.klz5u_CRWUZewjyF6FbhsIOZXPBTjcyxhCvTiBlhEi1uzE9x9bidfi7jQXG8wqU.vPpgtQPJCToXfdYdIyjS43YdfQI86gSZ8l_zZrB9pEMoC4dbv9Tc8GjVCkH_tNJYBG1B4qEsz9KkNnRdPFKT2nodV7.ZJFL6QNThdjeu7TY5hER2gvRAGQoLsW0KbqXLaB27uEOpL_Fd8NFqIjLW_WknMovcOzqR5fMAc3KF6tS_uhlzAjaKjDJPLU7Y3dwOUE4MR6gC6QY4VlgjhMkFbsKRW4NpkouT7wjkzOamzSwmVDq7Y_MmY3G5umLtB6FYcAJmuUpvllgfVFSIq0X_bI3g6XLE8YOwcDW2po4.fGsuTHecgqjRHxwbUhsv.4bf7WeU1z5JIbInHsPTpKVDNRJnmz8mMaqUjTat4hwlq9vO2x53X50Tjl1WfvpU4tx.RorxcdKbEmIIhreATMMPHMT_zbys3T9u6ANcqPR_yRMeY9cknP7h_bGj1yt3rA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f7e0753a24d64c';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\/7614528903?__cf_chl_rt_tk=Wt8UG9oYZjDofPTcX1JgQdBfN0i0dHKoiTejWIowxwE-1739146233-1.0.1.1-fcHSSAGYJcexfyWTTNiCLHCLFvE3Qp4bzxqJBkX9RbY" + 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