Yang Enze
... that Yang Enze, who built China's first fiber-optic communication system approved for practical use, taught until the age of 99?
... that <b id="mwBu0"><a href="./Yang_Enze" id="mwBu4" rel="mw:WikiLink" title="Yang Enze">Yang Enze</a></b>, who built China's first <a href="./Fiber-optic_communication" id="mwBu8" rel="mw:WikiLink" title="Fiber-optic communication">fiber-optic communication</a> system approved for practical use, taught until the age of 99?