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"The Belt and Road Initiative aims to increase the economic prosperity of a country. It does not aim at expanding the political and geographical authority of China in the world," he said.
He first rented five greenhouses in central Gansu's Yuzhong County in 2009 to grow the straw-fed vegetables. The strains Yang developed were then given to farmers for free, along with his guidance.
The exhibition will last until Aug. 11.
In the past, farmers mainly relied on experience to understand the growth of crops by observing their colors.
In the face of the rise of unilateralism, protectionism and populism, President Xi has stated in many international occasions that China firmly upholds multilateralism and liberalization of trade and investment, and takes an active part in global governance, according to Li.
来源：资阳报