七
=
一
+
乚
:
Mnemonic symbol: the Seven-Branched (七) Laser Sword. The Queen of Hearts (qi) is testing her new Seven-Branched Laser Sword (七) in front of the space station (Ø1). She's slicing flutes (一) and shovels (乚).
May 7 Cadre School (farm where urban cadres had to undertake manual labor and study ideology during the Cultural Revolution) (abbr. to 五七幹校|五七干校[Wu3 Qi1 Gan4 xiao4])
May 7 cadre school (farm where urban cadres had to undertake manual labor and study ideology during the Cultural Revolution) (abbr. for 五七幹部學校|五七干部学校[Wu3 Qi1 Gan4 bu4 Xue2 xiao4])