Looks like an impressive building but with some problems. Transiting was a hassle as mentioned by others before. There are long queues at security and probably due to Asian Games they will frisk everyone. The worst part is the smoking areas at the international departure are a serious design flaw. There is no separate room with proper separate ventilation system. The smoking areas are just designated corners right next to the washrooms nursing rooms and drinking water! Worse there is one smoking area for every two boarding gates. All the international holding areas for the boarding gates are filled with putrid smoke. While my family with children were waiting there for 4 hours waiting in transit we had to escape to somewhere near the immigration counter further away from the boarding gates. Anyone coming to Guangzhou who doesn't want to inhale second hand smoke please bring a gas mask.