Why were sheep, deer, chickens and other animals popular in pottery in Wei, Jin, Southern and Northern Dynasties?

This kind of animal modeling is very common in people's daily life and has certain practical significance. For example, at that time, people liked to use sheep as decorative modeling of utensils, mainly because it had auspicious meaning, which was clearly recorded in many ancient books, so animals were popular in all social classes as the modeling of pottery and porcelain. For example, Wu Dongyong 'an's three-year celadon plastic cans were decorated with various animal patterns, which showed that they were very popular at that time. Animals are lively, lovely and auspicious, which can also reflect the development of agriculture and animal husbandry economy in that era. Many such animal-shaped objects were found in aristocratic tombs at that time, which can explain the great development of manor economy at that time, and even many models of manor buildings appeared.