Wuxi full-time firemen didn't answer the phone.

1. Call back: If you know their phone number, you can call back to let the firemen know that they are looking for them.

2. Send SMS: If you don't know their phone number, you can try to send them SMS to let firefighters know that they are looking for them.

3. Contact relevant departments: If you can't contact, you can try to contact relevant departments, such as Wuxi Fire Rescue Detachment, to help find firefighters.