（5） Cool eggs:
The function of the same egg is mainly to dissipate excess physiological heat in the egg and provide sufficient oxygen for the embryo
To prevent the occurrence of overheating accidents and suffocation of embryos due to hypoxia. It is not necessary to dry eggs for 1-7 days,
Air once a day for 15 minutes for 8-12 days and twice a day for 20 minutes for 13-17 days,
Air it every 4-6 hours from 18 to 21 days for 15 to 20 minutes each time.
Method of airing eggs: open the front door and rear wall movable plate, turn the eggs in the middle of airing eggs once, and airing eggs can also be carried out in combination with the adjustment plate.
