01 · Zheng Qi
正气存内,邪不可干
正气 · 卫气 · Wei Qi
As long as upright Qi (正气, Zheng Qi) holds strong, pathogenic factors find it harder to invade. Hygiene and masks still help. A compromised immune picture still leaves you open to infection.
Wei Qi (卫气, defensive Qi) is the everyday outer shield in this framing. Rest, Lung and Spleen tone, movement, and matched kitchen pots support that resistance.