"Relationship between the speed of light and the dielectric constant of vacuum, and the vacuum permeability" https://baijiahao.baidu.com/s?id=1620801625866231703&wfr=spider&for=pc
"Again, Maxwell's equations is not true," http://tieba.baidu.com/p/5310170466
"Changing the vacuum permittivity and permeability [book]" https://www.docin.com/p-1006826084.html
"Do you really understand Maxwell's equations do? " Https://rf.eefocus.com/article/id-maikeshiwei?p=1
"You read one article with Maxwell's equations" http://www.sohu.com/a/215175888_132567