One faces powerful typhoons, the other depends on imports for nearly 90 percent of its food – south China's Guangdong Province and the U.S. state of Hawaii are on the front lines of climate change and food security challenges. Forty years after becoming sister states, the two regions are deepening ties in agricultural innovation and education. During a recent visit to Guangdong, Hawaiian lawmakers explored how grassroots partnerships can yield long-term solutions to global challenges. Source: CGTN Editor: Lyu Yun