凝固
níng​gù HSK7

to solidify

níng​gù to solidify · to stagnate
  1. 凝 níng nounverb
    to congeal
    to congeal; to solidify; to coagulate; to change from liquid to solid or gas to liquid
  2. 固 gù adjective
    solid
    (bound form) solid; firm; strong; secure; hard (not liquid or gaseous)

níng​gù to fix one's attention
  1. 凝 níng verb
    to concentrate
    to concentrate; to focus one's attention or gaze
  2. 固 gù adjective
    firmly
    firmly; resolutely; stubbornly; persistently