It doesn’t matter. Qi Gong's calligraphy works are widely preserved in the world. First, Mr. Qi Gong is not as fussy as some calligraphers. He writes a lot for units and individuals. Secondly, Qi Gong has been famous for a long time, and those who own his works will not easily throw them away or deface them, and every painting is well preserved. Third, Qi Gong’s works in each period are all fine works, and each one is a masterpiece, unlike some calligraphers whose works were immature when they were young, unable to write when they were old, or died early, resulting in few fine works in the world, and Qi Gong does not exist. This question.