As shown by Guoping Dong, Chun Jiang, Jianrong Qiu and co‐workers (article number 1700787), two laser beams interacting simultaneously with crystal‐like transparency glass ceramics containing nanocrystals (blue sphericities) and rare‐earth ions (red particles) can lead to bright white light, which can convey “0” and “1” codes to thousands of families via white light fiber laser communication technology and thus finds truly practical Li‐Fi telecommunication application in people's daily life.
