生活就像一架钢琴，白键代表快乐，黑键代表悲伤。但在人生的旅途中，请记住黑键也能创造音乐。
Life is like a piano. The white keys represent happiness and the black keys show sadness. But as you go through life's journey, remember that the black keys also create music.
Innovation in grain production isn't just about technology - it's about changing mindsets.
The end of history is not the end of events, but the end of the evolution of human political and social institutions.
