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-aff7kk5ul.mit-edu.top/post/0871926354

  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-aff7kk5ul.mit-edu.top",cType: 'managed',cRay: '90f809d86c37700a',cH: '_Q7M5xWWNCo5C_kax9RXGYT_EE1eGmN.duFAwe8pEPY-1739147928-1.2.1.1-nI8Kuwzn080A0nmMmeOKqVQtZX_LqGAhZBLLgfkdqlqNqqwmNffem8vHcTVRoG6I',cUPMDTk: "\/post\/0871926354?__cf_chl_tk=F.VEjt6TtuRevKSNjV9dsff.lLM6jPso7ek3Gb5kRHU-1739147928-1.0.1.1-QDCnoHYh2Me1psA5vW7rAAH2ZxhDxkztOAQjKXppJMM",cFPWv: 'g',cITimeS: '1739147928',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0871926354?__cf_chl_f_tk=F.VEjt6TtuRevKSNjV9dsff.lLM6jPso7ek3Gb5kRHU-1739147928-1.0.1.1-QDCnoHYh2Me1psA5vW7rAAH2ZxhDxkztOAQjKXppJMM",md: "tbelKCYkZZYukhEDwUr1r570YFfTiHD1MT9Go.lvzh4-1739147928-1.2.1.1-SvFaSv8NZ3LUIHG9oK0uUmU2DCCSnaJUrLqMiAePlyZtbFI3TW_QcG7Pu4MhIQPPkBfmV6bLKrIa8m6CEHajWM4ZB3F1AsrYw9y1Q.0t9vdokVnCtq9y4569utsEXdOF5SHPdzZOOYq.XSHldXn0KUntN0_qS8LkhYwbjlhxoPGhZ8aAx9wjv0ZAZUTGw8zszwR3v5pY7CQWmonewi5OP_4ImWZLVY2LvYQVdCyts.creCTPEuhcft_VH8QeiOxBxBOWF4nRoW120AOlC7pt3jHMgwTdOPo0qisCLQNwFHOA84e2ourWiHeIUMjNpXboJmzmhxuw2UGLLegbiRAgpCuR5Eo4jzuumRGXU1zzKelnPvpfk.XW9FAdIdWpf8onw89eQI76Ms5byiDplk7FpMAiFccM8YEVXIWPEj.AcMOWE4COID0XkiR3CkeCECcyaEu_HtJoNvOlFtndOUUd0nBklOA4CNl2Eysn9.29RA9.bj2ui46bJy2EOlILWWGJANsAYp.A1c9_hLbze7_SFgpju107yvjCsXNSSXhvWlPwfQljl.AWjMEycbbrDKHPOIxlY0xrDTksjcgcpM103MUSIDGeTStm.84c8pfIJL7I3DNVhOtzH_LxFI5YdLtajeu4BrVVP24Gc5PnEY864Ee0Mvr6firVcZN77LZY0y1.Q8BnsRGtNgA5f.sVPq6AUCG1A8XLMgFiuqDk8kEtKBMK5g7zlRb30fF.0Akr6vCytjzUbg2lJ4qp9u.bb7NNRxyO17B3lFoINJmcLpkXFdflPqpomCd35RBx4ryk55YA2JLYVVk.JtjxiemvfbN6gTkgrVnYdExaTZbXfyU6qhEKB4e7f3hxoYdvFnReZCPL22gogTkMBrkdlP_WDl5dc4TEr._hFYDBaO71Ygpy5s6VAKyY1BdUh0KWvfY_mje0yQbpcPDlljWNFUlRJjAsFmguFicOXrLj0mqaeprFwsEtOnKt5ZEiHiJRQgz1Zyx8MF2RAB80UnOFnYcPG2eja7R9d0Opu.LzSfJRuV0l1CIoO1H4aJa4ah4bbMHweSNI6A.OBwE_hAPd9ngLxhCP6mBLL41A6Unp7bLldRTu2L9cuiWutDB10XmgH5qiSMfGs_2WgzwUNe0Bl85RWCIJcGeKycxM7ff2kODg8xutYC5Xsv75qmKVwPTG9NkcGik3OPLhQ9ESjq.Y5NVmx9CC_9pu620UkX9Zsgte.CelH0bmvnfsAMAhnK5Y1C_RAGIOJbXAZCPLK.iRf7QWWkQ_CFfzJTbYD5m3ZqO.Z4ZZuLY4h5XrgirWEsDvN3QSEDdN3m7n6p4sMEXPTQkxUbgktIo0uLsCqYS9TH51t03jTd3Qo9pipIXVlh85VNErqC0vlRAa02VVSMSGEDd.aSMJcrtjvGcLF3_zKitdWK2iY9kPdEcGDWM2OTQOXp5U36xXLpUzT1R6Tpz50OYBEfxoC_eVIbl4c8_DA3Xm2owcqv6OzEzFVajXk8OFAbTkpBQ3kls7tPLXTW4hUMxkUr8nFlkXUOQTHqc.a3XxvGuKTUKO.WT24E7ljRF8GqvNOPcXr6_.IvC6O0h3IuwnhNMgzVO4yRQzS6X6SMb73T8FS2iQKN71hxHg4UJUyYfJ82jxoYtkMrmPp03.NGZVDbV8hijeyAnpJ8Q0FIiPVCeRzEHXaDWm16UfNyRBFDLwhmBXO4e5wzIlYLcUK.5kEA9UzkJPOiy9qLQ3vU_m_DoCXiJdItHqONx27k2pfOx3FCmpca8etnDxNzsGfv8fcnzai0kT.HPfA8p3obgnotn3t5zeAG7wcQNPdJeWyI_sRK1Eho4ZdNmdv9KEps2Jb1f9P1f8dAC.G1myVrBFBKHaiuKX6xLWm1gRXTO10cJgaQvFt0THadwF6k1nGUQu0IMHe49kjLUHjokAno2PzK6QKQiCjX_Q7DciNUaBewrSHhjGuOLo4BHC6gxY.ZObc04bG09oK5Yrv.jx4LyDX8TS.VcHrpsvhenshi46cnVz5.LXNcwxoF4ZS.fhzYTJc9GF1bjcVPUrva47DEFISGGgFM2QknzOaG_0kTTXNZ2uXLEs47_pn0wDWqFVbYnYW2iDmjTxdMoilZ6PrzdoyYJx.kMM16uCTvIeSjN7JjSSd36UIPJpiqfxvKMMDz36D5Jjrc8vaLScj5zp3V.DzXCjdcimohBsCBswlbVe_jCm2jETIFidYwr4nwlY0PLskUu8",mdrd: "4X9oqq.e2B6SWt1UFhH0G2DS8CDFXpNUTJ7pRFI4vYs-1739147928-1.2.1.1-C5NGA9lrevUODpAJl8IEqnxZH3u1WmdmeBNkmg0fYlWoZVps54Zq2WeuaF1ADxc..WVb.cqskRM47zuz5TOM_SnCCIc9VDjZ9v5PCWDYd5pCydihyFWwILF3wdRqdtm5ueJ1D4SuB4YWCsmsLQbBKqbbNE3VU7AMI6qEuPK1m_Dw3aAznnAt05Q7iv0PMsPPmScXA4N3iHsuv1ZtR_676qQIpPOfdi6321kuegHqOO0OAqpA2lcudP6Nvm.yL06n2ptbJXuiPfhoGSaLv800ZJwyxWKNy9Y9dFLPHT3Q.klKPucl_Yyuh4WikOV1m8IR7dFmtAJodCcfrwsC6mgCdJdGrGwF93yeHNIaXSB59ZvnO0NZLjPVGOBysCrDlY2DE4idL9ns5I4muAVT7lJq7ZWsoFNuZYjvXChBs.JN2J2V9Ar37EIHDbjqjyX1netQofKf8jtp9MDJ6OWdKpCasoGk10XY3ej9_U.8pewvBhsLMjIQL0Zg4jxkp0WDufodJMvLYi20YLoCMc6BjEJ6379acxWzA.tnAXpC2rAgHSaE4jfbKjgxxMJTVkz5McDg9IUPNVCLSySF1GiWCf3cyhMprfSgEsU1tG_6pL1bY0Yd8q4Rn0LSD8sJkklQJto.v7E8GnIHcvPNjFyc2fsNU04GFGmKqZXXWJLhhj3h1L6gZEUw0Ju.Gb8lRnba4w5iMR5tJxk7wl7KY1xDjk1HfI14urW1WY8fg0As.MFOm_gNTFkY7Px64q58o5JdpuBQ2xz8XM5RR_XbH5TyHmIBloHOU34sL5I4.eksLLSKtJcU1S7waslhJBXa5Guwl_B1J7or4AUzMnHM8fUV_yGmpT3uYbvMsqdVb4uprNnkKDymqGlR.HkJbeGjuVY_ROn8erNJkoPY4JTHUhIba43hrO5S0KxRta9bZOQWqTBzHzzoJnqDXSotFQkQfAntEDonnHLNIv.JbI76Ld6viT1_08rquaRlkI3Sp_jNycF7_m_4qNjgwGcGgIGQnFPSQ0Oibov5dpM1o8I51HDYHMvZ0yTQ8UZR.HDmLRmRWXQzAllfSPMICyuTfx0eB5bNwKWxdxNCBevWRm6C00JbZJ5qmC6hB3.8SdC3Zd6UE.hrkLw6ZylQNqODPg3oZA09MAmw.QbSQGWw0SY4QcCtN1b.pPBH2OGXybRrKEd4mXc3GM6b6Hp705jmb0nqfbwmIKXK.ozlG8.7RxUCB8m54wptmcAeCaqK.ZMi37bFAyVrgEgo1.84uGIPOlCa4yyIjquD1BGb60YYZMM6ANvEihIgZWWTUAdj9DVQKXENRUhtEDCVl8lsVaruIu_OWhFELNN6HYMI_8YkHO0wzZsNY4pCvDSZh665UKLYo8QnvWjg.6tPQRBYitAi7.Ga8RLQaYHikWYmcFUnB1TSlSi1ZeZ3bjx5hn13cGM.3_QWav96v6XtfNpjRbu_2MT04VkA6Gh1rAq3Eo7Hwmv5Aymib6M9ejjdtk1NPUZGNlaJ.DWwBkUS.b_RWs7LB.gCvfxDzFDoyJjPWght8rigwLmRs84oAkvVQOJVyM8Wm1Z5_1xnPCMLOt3sa8pSuuUdmqzdT2ZsLuuds3HdRdWfsaLvKyGY0YEtsYzwVqEW25dfBBVKnVq9Hra7l6vnzpOrxRh7fAFSG3OoknE2WPMiv83i7aOawTDFug6EiRSQ5DCi5U28KFbZgCbN26yS6dARL1_cOT0NVb8LQcilmtt7xeqoBwbRvBl0HC7q1eI0BVLKv_XnxM1fkDIdgcpU7JuB.wDa6phsiWg0oNZ3wOa_6bpxxwu6QCvtIxb61Py0nUXG73s3reU"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f809d86c37700a';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\/0871926354?__cf_chl_rt_tk=F.VEjt6TtuRevKSNjV9dsff.lLM6jPso7ek3Gb5kRHU-1739147928-1.0.1.1-QDCnoHYh2Me1psA5vW7rAAH2ZxhDxkztOAQjKXppJMM" + 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