It depends on the airport and the security. I flew out of Incheon in Seoul and I was informed at the boarding gate that they took two lighters out of my checking lugguage. But i flew into Seoul from Toronto with those same lighters and no problem. Another time i flew out of beijing and they confiscated a bottle of crown royal that was in my checked lugguage, they claimed that because it was opened I couldnt take it with me. Which is bullshit, I've flown from California to toronto with lighters, and a bottle of liquer in my checked bag that had been opened several times. It really depends on the airport. But one thing is for sure they are getting stricter and more paranoid everyday.