Briefly describe the artistic features of ancient traditional flower-and-bird paintings in China, and list at least two classic works and their authors.

A: The traditional flower-and-bird painting in China has a fine tradition of giving priority to sketching, conveying feelings with objects and conveying ambitions with objects. The "sketching" of China's flower-and-bird paintings is different from the "still life sketching" in the west, but focuses on expressing the ecological characteristics of flowers and birds, describing the vitality and characteristics of animals and plants, and expressing the experience and feelings of nature and life. It is an empathy expression that people appreciate animals and plants, and it reflects the aesthetic relationship between man and nature. Therefore, when painters in China appreciate plants and animals such as plum, orchid, bamboo, chrysanthemum, pine, tiger, eagle, cow, horse and crane, they often give them certain "social attributes", and they use them to express their feelings and life wishes when painting. The representative painters and works of ancient traditional flowers and birds include Wang Mian's Mo Mei Tu in Yuan Dynasty and Xu Wei's Mo Grape Tu in Ming Dynasty.