Copying a senior copywriter is rarely imitation (that is, covering a rare book with a thin layer of paper, through which you can vaguely see the handwriting below, and then carefully "copying" it with a brush dipped in thick ink).
Let's say that Wang Xizhi's Preface to Lanting was copied by emperors of various dynasties. There are also various copies. Some are literally similar, some are mentally similar, and each has its own merits. (this makes people "hard to give up"), so there are all kinds of handwriting in front of them. The same is true of Chinese painting, and the riverside scene on Qingming Festival is an example.
At present, the famous manuscripts of various museums in Beijing are also copied and exhibited, and they can never be exhibited as originals. We all know this truth: manuscripts are extremely precious.