Which position should I choose when I come to Cao Zhang for the first time?

For the first time, you can go and see Wei Heng's "One Day Post", which is relatively simple. Cao Zhang's famous calligraphy posts handed down from generation to generation include: Juyan bamboo slips, quicksand bamboo slips, Wuwei bamboo slips, Zhang Zhi's cool autumn, ram brick sticks, Cai Yan's eighteen broken sentences, Cao Zhi's Fu on the Bird, Cao Zhi's Long Fu Volume, and Huang Xiang Urgent Chapter. These are optional. Cao Zhang, one of the traditional calligraphy styles, is an early cursive script, which began in the Qin and Han Dynasties and evolved from a cursive official script to a standard cursive script. Cao Zhang Hongji is the predecessor of "Modern Grass", and the difference with "Modern Grass" is that it retains the brushwork of official script, and the upper and lower characters are independent but basically unconnected.