What is happening at Guangzhou airport???

So, I recently departed from Guangzhou Airport (first time) and it was an awful experience to say the least. I checked in my luggage as usual and then made my way to security where I was waited by a lot African immigrants that starting swarming me about how they could pass my luggage (they told me they were African, so I do not mean to discriminatory in any way). I did not understand what they meant until I saw the scale at the entrance of the security gate. My hand luggage had to be 7 kilos and not a single gram more. The staff was unpleasant and quite frankly rude. I was sent out and once again swarmed by the beforementioned people, who told me that for 500rmb they would pass my luggage. Being quite desperate, I choose to give it a go (huge mistake). The "boss" simply started rearranging my bag in the most inefficient way, and I ended up STILL not passing despite their promises. I had to get back to the counter and pay for my hand luggage to be boarded. What surprised me the most is that these scammers were operating RIGHT IN FRONT of security, I saw the Chinese guards glancing at us several times. This is so unlike any encounter I have had in China, which is such a safe and pleasant country to travel to. Also knowing their keenness for security, I found this particular experience very out of place. I guess it is this specific airport which lacks in security measures, because on none of my trips to China, have I encountered anything remotely close to this. HOWEVER DESPERATE YOU ARE DO NOT PAY THESE PEOPLE A SINGLE PENNY!!!