People view agricultural products during the exhibition at Guangxi Planning Exhibition Hall in Nanning, south China's Guangxi Zhuang Autonomous Region, Dec. 10. 2018. An exhibition showcasing the region's achievements made in the past six decades, especially those during China's 40 years of reform and opening up kicked off here on Monday. (Xinhua/Li Xin)

　　A miniature of Hongshui River hydropower plant is displayed during the exhibition at Guangxi Planning Exhibition Hall in Nanning, south China's Guangxi Zhuang Autonomous Region, Dec. 10. 2018. An exhibition showcasing the region's achievements made in the past six decades, especially those during China's 40 years of reform and opening up kicked off here on Monday. (Xinhua/Li Xin)

　　Agricultural products are displayed during the exhibition at Guangxi Planning Exhibition Hall in Nanning, south China's Guangxi Zhuang Autonomous Region, Dec. 10. 2018. An exhibition showcasing the region's achievements made in the past six decades, especially those during China's 40 years of reform and opening up kicked off here on Monday. (Xinhua/Li Xin)

　　A tractor domestically-made in 1960s in Guangxi is displayed during the exhibition at Guangxi Planning Exhibition Hall in Nanning, south China's Guangxi Zhuang Autonomous Region, Dec. 10. 2018. An exhibition showcasing the region's achievements made in the past six decades, especially those during China's 40 years of reform and opening up kicked off here on Monday. (Xinhua/Zhou Hua)