Differences:
1. Different types
Running script is a form of Chinese calligraphy, and Xingkai belongs to running script.
2. Different styles
The regular script is clearer and the strokes are strict. Running script is mostly written in running cursive, which is relatively smooth and the strokes are random.
3. Different uses
Xingkai pays more attention to practicality and is less artistic. Running script pays more attention to artistry and is less practical.
Executive script was developed on the basis of official script, between regular script and cursive script. It was developed to make up for the slow writing speed of regular script and the difficulty of identifying cursive script. "Xing" means "walking". It's not as sloppy as cursive script, nor as straight as regular script. Those with more regular script than cursive script are called "Xing Kai", and those with more cursive script than regular script are called "Xing Cao".
The running script appeared at about the same time as the eight-point regular script, and its form is also very close to the eight-point regular script and later official scripts. This is equivalent to changing (Zhang) cursive script from official script - deriving other branches from "zhengti characters". In addition to the official script, the "Orthodox" characters of the Huanling Dynasty were followed by the "eight-point regular script", so people think that the running script is another branch of the "eight-point regular script".
In fact, it is the same as other calligraphy styles. It was originally created by ordinary mass writers. As long as the eight-point script is made more similar to other calligraphy and loses the trend of official script, it will become running script. , we can see it everywhere in the bamboo slips generally unearthed in the late Han Dynasty. In the late Han Dynasty, running script was not widely used. It was not until the emergence of Wang Xizhi of the Jin Dynasty that it became popular.
Extended information:
Xingshu is a calligraphy style between regular script and cursive script, which appeared around the end of the Eastern Han Dynasty. The name of running script first appeared in the article "Four Styles of Calligraphy" by Wei Heng of the Western Jin Dynasty: "In the early Wei Dynasty, there were two schools of running calligraphy, Zhong (Yao) and Hu (Zhao), both of whom learned from Liu Desheng."
Fengfang of the Ming Dynasty had a more vivid description in "Shu Jue": "Writing without stopping, putting paper without engraving, turning lightly and pressing hard, like water flowing through clouds, without any interruption, and it will last forever in business." Running script has been favored and widely spread since its creation due to its unique artistic expression and broad practicality of flowing words, fast writing, elegant and easy to read.
Baidu Encyclopedia - Running Script