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On the day of inoculation, one must select auspicious days such as Cheng (Completion), Kai (Opening), Zai Zhong (Planting), and those blessed by the Heavenly Virtue (Tiande) and Monthly Virtue (Yuede). This is considered propitious. If these three categories cannot be fully met, then either a Cheng or Kai day is acceptable. However, if the day coincides with the location of the "Human Spirit" (Renshen), inoculation is taboo and should be avoided.

Auspicious Days for Inoculation:
Cheng Day, Kai Day, Zai Zhong Day.
Distribution of Tiande and Yuede Days:
For the 1st, 5th, and 9th months, it falls on Bing; for the 2nd, 6th, and 10th months, it falls on Jia; for the 3rd, 7th, and 11th months, it falls on Ren; for the 4th, 8th, and 12th months, it falls on Geng.
Days when the Human Spirit is located: On the 11th day, it is at the nasal bridge; on the 15th day, it is throughout the body.

Post-inoculation care and regulation are of utmost importance and must not be neglected from beginning to end, such as avoiding extreme cold and heat and being cautious with diet. When the weather is severely cold, coverings should be warm to prevent exposure to cold, lest the child be affected by cold qi, causing the variolae (pox) to fail to erupt. Conversely, one must not use excessively thick cotton or layered mattresses, which would cause heat qi to stagnate, preventing the variolae from venting and emerging. When the weather is warm, coverings should be moderate to avoid external pathogenic heat combining with the toxin, leading to increased irritability and heat. One must not lightly dress in thin clothes or expose the body, allowing cold pathogens to invade externally and obstruct the vital qi of generation. Thus, balancing cold and heat is prized. The body's Qi and Blood rely on food and drink for transformation and production; the entire course of the variolae depends entirely on this. If dietary intake is insufficient, where will the Qi and Blood find support? However, excess must also be avoided. Over-drinking leads to fluid retention that fails to transform into Jin Ye (body fluids); over-eating leads to food stagnation that generates Phlegm-Heat. Therefore, for infants nursing, milk frequency should not be excessive nor deficient; for children who can eat solid food, they should avoid pungent, hot, roasted, or fried foods, sticky, hard, or raw/cold foods, excessive tea drinking, and cold beverages. Meals should not be too full nor too hungry. This balance in diet is prized. Beyond temperature and diet, regarding movements and actions, one should neither indulge them arbitrarily nor oppose them excessively. It relies on the caregiver to tolerate the child's temperament, acting with diligence and caution to provide proper protection. Caution is required not only after inoculation but also before; not only when the rash first appears but especially after the scabs fall off. The inoculator should earnestly warn and explain in detail, ensuring the parents understand the gravity of the matter, maintain a cautious mindset, and follow regulatory methods strictly, thereby ensuring complete safety. If even slight negligence occurs, causing the child to be invaded by cold/heat or injured by diet, whose fault would it be? This is why those who do not understand the importance of post-care absolutely should not undergo inoculation.