the Band-tightening Spell (in 西遊記|西游记[Xi1 you2 Ji4])
a spell or incantation for controlling sb
Definitions (Wiktionary)
noun, figuratively
something used as a device of inhibition; spell or incantation used to control someone; something that is used to control or restrain another
noun
“band-tightening spell” recited by the monk Tang Sanzang in the classical novel Journey to the West, which causes the headband worn by Sun Wukong to contract to give Sun Wukong unbearable pain