It can't be called "Sun Ti", because in the history of calligraphy, only He can be called "Ti", which is a calligraphy book. It is a milestone in the development of calligraphy and has historical significance. It is the theoretical basis for the formation of style and a model for future generations to learn calligraphy. So people nowadays rarely reach the height of "body".
It can be called "grandchildren". Now many so-called calligraphers are busy with all kinds of calligraphy business, such as writing titles for movies and television. The popular calligraphy style has long misled the public's calligraphy aesthetics, taking ugliness as beauty, grandstanding and so on. These talented people have certain influence and fame in the society, so many book fans inexplicably admire their personal calligraphy and call it "Ti". So, you should call him a corpse, that's your business.