The 12.5m shares sold probably fetched around $500k - $600k,...

The 12.5m shares sold probably fetched around $500k - $600k, which is nothing for the Chinese. So it's definitely not due to the need to free up some cash.

They are clearly interested in AMG's tenement package, and they probably think by smashing AMG SP to the floor, the management will hand over the assets to them at a bargain. Perhaps they have employed the wrong tactic here. They could have been more courteous and knock on the door politely.