I had bought/seen the 1980 StringTheory book full of Maths .I also bought-book of the 2000 SuperstringTheory full of Topology . In 2020 , I only saw many English research papers ,theoritical Talks without any Maths/Topology demo .This is the first time ,I am listening to a 100% Chinese Version TALKS about SuperSymmetry/SuperString through Internet . Good ,keep it up .
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