It's suspicious when a country that has literally no history of success in a sport comes out and starts breaking world records. It takes a lot more then doing some extra squats to win at an Olympic level. It takes strength, skill, training, technique, and coaching. That's why most sports are dominated by certain countries for long stretches of time, because the coaching and training are already in place.
Aha, aha and whatever happened to this 'Olympic spirit' thing? or does that only apply when people feel they want to use it. I would much prefer leaving the technical stuff to those people whose job it is to find anyone that's cheating. Then I will start calling foul until then as far as I'm concerned it's a celebration of the world's best athletes showcasing the heights of performance. Also like I said it's not as if China exclusively excel on sports where you can dope like mad to win. So even the excuse of 'no history of success' doesn't really hold much water.