What does the old man Qi Baishi mean by "no day off"?

Don't teach a day to do nothing: don't let a day pass. -Qi Baishi

Qi Baishi (1864- 1957), a native of Xiangtan, Hunan, is one of the top ten painters in the 20th century and a world cultural celebrity. He is a famous master of calligraphy and painting in China in the 20th century, and a master of Qi Baishi's calligraphy and seal cutting. He used to be a professor of Beijing National Academy of Art, honorary professor of Central Academy of Fine Arts, honorary president of Beijing Painting Academy and chairman of China Artists Association. He was awarded the title of "China People's Artist" and won the World Peace Council 1955 International Peace Gold Award. Representative works include Twelve Pages of Flowers, Grasshoppers and Insects, White Grass Stone Carving, etc. 20 1 1 On May 22nd, his largest work, Song and Li Tu Si Yan Lian, was auctioned at a sky-high price of 425.5 million yuan.