Sourcing more food from China

The New York Times reported that Singapore is looking to enhance its food security by engaging in food production projects in the north-east of China. A project by the familiar Singapore Food Industries to operate a pig farm and another by Singbridge International Singapore to develop a large scale food production zone in Jilin was mentioned.

Given that China is a net importer of food and that its own population's diet is improving and thus requiring more food, I wonder how sustainable China's food exports will be. Furthermore, when the effects of peak oil hit, the north-east of China will be considered a very far place from which to import food, which will mean much higher costs. Can we afford such imports in the future?

It will be interesting to watch these 2 projects to see whether or not they are sustainable given the aforementioned constraints.