Identification of ancient paintings of this subject, a lot of people all need to know. First, the museum and the library staff. Because the ancient works of calligraphy and painting, museum and library collections of the rich, and also to cultural relics unearthed and handed down from ancient times as much as possible to collect, protect, to serve the community. If the museum and library staff do not understand the encounter of ancient calligraphy and painting, calligraphy and painting appraisal, its authenticity, quality does not distinguish it with the chaos, Liao Yu, fish, to make treasure into the waste paper, but feel pity; and can not provide reliable information and convenient for painting and calligraphy lovers and art workers, three light and not hide identification, and blind color discrimination, tone deaf, was laughed at those who have knowledge. Such museums and libraries will not be able to protect the cultural relics, the use of cultural relics to serve the community.

　　其次是文史研究工作者。歷代流傳下的書畫作品中，有許多直接反映了現實生活，為研究歷代社會生活和文物典章制度，是珍貴的生動形象的歷史資料。如：上海博物館收藏的“內清質以昭明”的透光銅鏡，是西漢中晚期物品，光線照射鏡面時，紋飾相應，將銅鏡正背面的花紋清晰地反映到對面墻壁上。這種精工絕藝和包含著的科學原理，令人驚嘆不已。同時漢代的畫像石和畫像磚，發現近千處，除描寫死者的生平事略外，題材內容十分廣泛。有古代的神話和歷史故事，如伏羲、女媧、神農、古圣先賢、孝子和貞節婦女的故事；有雷公、雨師、風伯、北斗、織女，以及樓臺亭閣、舟車人馬等。武氏祠里就有的“荊軻刺秦王”、“穆王見王母”、“咬趙盾”等故事畫。四川成都發現的畫像磚有“弋射”、“收獲”，描寫了水邊射雁和割稻的情景；“市井”描寫了鹽的生產過程，等等。但是，要利用這些資料，就必須別偽求真。否則，所憑藉的資料若屬虛偽，則研究出來的結果當然也隨之而虛偽，其研究的工作便算白費了。

　　The second is the study of literature and history workers. The spread of the works of calligraphy and painting, there are many directly reflects the reality of life, for the study of history of social life and cultural institutions, is a vivid image of precious historical data. Such as: Shanghai Museum collection "in the clear matter to light mirror, West Hanzhoung Zhao Ming" is advanced goods, light mirror, the mirror is on the back of the corresponding patterns, patterns clearly reflect to the opposite wall. This includes science and Seiko Jueyi principle, it is amazing. At the same time, the Han Dynasty stone and brick, found that nearly a thousand, in addition to describing the life biographical sketch, the theme is very extensive. There are ancient myths and historical stories, such as Fu Xi, Nu Wa, Shen Nong, ancient sages, dutiful and chastity woman; there is thunder, rain division, wind, Beidou, Vega, and pavilion, zhouche troops etc. The temple is the famous "Jing Ke Assassin", "King Mu see Queen", "dog bites Zhao shield" story. Sichuan Chengdu found a brick "Yi shoot", "harvest", describes the waterside shoot geese and cut rice scene; "the marketplace" describes the production process of salt, etc. However, to take advantage of this information, we must first do not false truth. Otherwise, by virtue of data if it is false, then the research results of course also false, its research work will be in vain.

　　收藏家若不懂字畫的鑒別，則會花大價錢買贗品。掠販家若不知曉字畫的鑒別，則不知誰貴誰賺，就達不到唯利是圖的目的。所以大家要慎重！

　　If we do not understand and identify collectors, will spend big price to buy a fake. If traders know Home differential grazing pictures, do not know who you who earn, it is not up to the purpose of mercenary. So we should be careful!