China released a report in April disclosing that much of its arable land is contaminated with heavy metals that are entering the food chain. It doesn't bode well for consumers and suggests that China increasingly will have to import food.
In recent years, U.S. exports to China have been growing faster than Chinese exports to the U.S. Similarly Chinese investment in the U.S. is growing faster than U.S. investment in China. Trade frictions are inevitable.