The story about Liu Gongquan, 150 words.

Liu Gongquan was a great calligrapher in the Tang Dynasty. Once, the then emperor Tang Muzong went to Beijing on business. He said, "I have seen your handwriting in the Buddhist temple and I have long wanted to see you." In order to reward Liu Gongquan, the emperor promoted his official position, and then asked Liu Gongquan how to use a pen. He replied, "Only when you have integrity in your heart can you hold the pen correctly and call it calligraphy." Tang Muzong immediately changed his face, thinking that Liu Gongquan was writing a letter to him. In ancient times, subordinates didn't say a word well and were easily beheaded. Liu Gongquan's daring to say so shows his fearless spirit of telling the truth.