The copied things can only be used for reference. No matter how good the copy is, it cannot be compared with the original post. It is not on the same level at all. Jiucheng Palace is Ouyang Xun’s representative work and one of several other works. The clearest one in the inscriptions is one that those who study European sports should not avoid. Ouyang Xun is known as the best calligrapher of the Tang Dynasty, while Yao Mengqi was only one of the more prominent people who studied European style in the Qing Dynasty. The calligraphy of the Qing Dynasty had already fallen into decline. Who do you think is better, Ouyang Xun or Yao Mengqi? As for the clarity of the stele inscriptions from the Tang Dynasty or other periods, this is an inevitable factor caused by natural weathering, peeling off and artificial tapping. Learners have to overcome these difficulties in the learning process. In fact, Jiucheng Palace is the Tang Dynasty stele. The clearest one among them. As for the copying by Yao Mengqi or Huang Ziyuan and others, it can only be used as a reference, or the contemporary ink copying by Tian Yingzhang, Lu Zhongnan and others can be used as a reference when starting to learn. Getting started, but once you have a certain understanding, you must read Ouyang Xun's original post.