Photo taken on March 22, 2018 shows the Hukou Waterfall of the Yellow River in Jixian County, north China's Shanxi Province. The "Shanxi Day" theme event held as part of the Beijing International Horticultural Exhibition kicked off in Beijing on May 12. The Shanxi Garden showcases its endeavor in greening and afforestation as well as its concept of green development at the ongoing expo. No longer mainly relying on its coal industry for growth, Shanxi has been committed to developing clean energy and other emerging industries to strike a balance between environment protection and economic growth. (Xinhua/Cao Yang)