系

xì
  1. system
  2. department
  3. faculty

CEDICT

Homographs

係 xì
  1. to connect
  2. to relate to
  3. to tie up
  4. to bind
  5. to be (literary)
繫 jì
  1. to tie
  2. to fasten
  3. to button up
繫 xì
  1. to connect
  2. to arrest
  3. to worry