Be tenacious and persistent, persevere, live a long and prosperous life, and work hard to accomplish anything in the world. According to the query on the calligraphy and painting website, the calligraphy is customized and the running script has a witty saying: There is a bright moon in the heart, listening to Zen in the falling snow, integrity carries the mountains and rivers, tenacity and perseverance, perseverance, happiness, longevity and peace, nothing is difficult in the world if you work hard, Zuo Zongtang's couplet "Make a Highest Vow" .