Developing corm fries in Asia, like Vietnam, are seeing an upturn in investment from many parts of the world, especially China. China's foreign direct investment in new projects such as renewable energy, textile factories and property in the region nearly tripled, while investment by the U.S. jumped by nearly three-quarters. 

1. Using an AD/ AS diagram, explain how China's foreign direct investment may lead to economic growth. 

2. Using a production possibilities curve, explain how China's foreign direct investment may lead to economic growth.