What does the animal "ventilation" in the zodiac mean?

Livestock breeding refers to the construction of huts (huts) for poultry and livestock to live in.

Ps: In ancient times, traffickers would peel off the whole skin of a dog that had just been killed and wrap it around a stolen child while it was hot. The blood of a hot dog won't stick to you like it was just born. It is a lie to say that the dog forced others to perform juggling to make money, and the child soon died. Buy a new one. This is "animal husbandry".