Key factors are environment control, container choice, and regular inspection.
1. Control the Environment
- Humidity: keep around 40%-60%; use desiccants or dehumidifiers in humid seasons;
- Temperature: keep roughly 15°C–25°C and avoid large swings;
- Light: store away from direct sunlight.
2. Choose Suitable Containers
- Lower-aged chenpi: breathable cotton or linen bags;
- Mid- to high-aged chenpi: ceramic, clay, or glass jars with moderate sealing;
- Metal containers can work if lined with an inner bag.
3. Inspect Regularly
Check monthly for pests, mold, or off-odors and handle issues early.
4. Sun and Air Periodically
- Lower-aged chenpi: sun 3–4 times per year;
- Mid-aged chenpi: about twice per year;
- High-aged chenpi: mostly inspect, sun only if needed.
Following these practices helps reduce spoilage risks.