1. Clean bedsheet & pillow case per week, then wash with hot water
2. Take out all the doll around him
3. Clean curtain bi-weekly
4. wear 有領衫 to protect his neck
5. I also make him soup with cocrodile meat or with 冬蟲夏草........it works!!! but since quite expensive, so I only make for him during咳咳, and stop when he get well. anyway you can continue as someone said it can strengthen his health wor!!!
6. If possible, don't play on the ground (as recommend by my doctor.)