chong

verb  

• To keep (light, torch) burning on for a long time
  • chong đuốc
    to keep a torch burning on for a long time
  • chong đèn suốt đêm
    to keep a lamp lit all night long

• To keep (eyes) open for a long time, to stare for a long time
  • mắt cứ chong suốt đêm không ngủ được
    his eyes remained staring the whole night, without being able to sleep a wink