Is calligraphy generally a traditional Chinese character?

Calligraphy works generally use traditional Chinese characters, but we should pay attention to two differences. First, the ancients simplified a lot of Chinese characters in normal regular script or running script when cursive, and many characters in the National Simplified Chinese Character Scheme were standardized according to cursive, so it cannot be considered that simplified characters were used in cursive works. Second, calligraphy works do not need to be simplified, but the author needs to be familiar with which words in traditional Chinese characters and cursive scripts were simplified by the ancients and which words have not been simplified so far, both ancient and modern. Please adopt it.