Editing Later Zhao (section)

== Cultural influences ==
[[Xie Fei (inventor)|Xie Fei]] and [[Wei Mengbian]] were two [[Mechanical engineering|mechanical]] [[Engineer|engineers]] under the Later Zhao who built a [[south-pointing chariot]] (also called ''south-pointing carriage''), a directional [[compass]] vehicle that apparently did not use [[magnetic]] principle, but was operated by use of [[Differential (mechanical device)|differential]] gears (which apply an equal amount of [[torque]] to driving wheels rotating at different speeds), or a similar angular differential principle.<ref>J. Needham (1986), ''"Science and Civilization in China"'', Taipei, Caves Books, Ltd, Volume 4, Part 2, Part 2, pp. 40 and 287, {{ISBN|978-0-521-05803-2}}</ref> For the great ingenuity shown in the construction of the device, Shi Hu granted Xie Fei the noble title of ''[[Hou (title)|hou]]'' without land possessions and rewarded him generously.<ref name="Taskin2">{{cite book |last=Taskin |first=V. S. |publisher=[[Nauka (publisher)|Nauka]] |year=1990 |isbn=5-02-016543-3 |series=Материалы по истории кочевых народов в Китае III-V вв. [Materials on the history of nomadic peoples in China. 3rd–5th cc. AD] |volume=2 |location=Moscow |language=ru |script-title=ru:Цзе |trans-title=Jie}}</ref>{{rp|99}}<ref>Fang Xuanling, ''Book of Jin'', supra, Vol. 106</ref>