Especially stele inscriptions. Scholars have enjoyed copying them ever since the Sung dynasty, but it was mainly for their calligraphy. In fact, they also have historical value that's well worth referring to.
尤其是碑文，從宋代以來，文人都喜歡臨碑，但主要是為了書法，其實碑文也有歷史價值，很值得參考。