A residence document for permanent stay is always issued for 5 years. When it expires, you can apply for a renewal. This applies to the following residence documents:
- Permanent regular residence permit (type II)
- Long-term resident EC (type V)
- Permanent asylum residence permit (type IV)
- Permanent residence citizens of the European Union (type EU/EEA)
It is not obligatory to renew a permanent residence permit. Even if you do not renew it, your residence status will be unchanged as long as you continue to meet all the conditions.
However, it is recommended to renew the document for practical reasons. An institution or an employer can ask for this. Your valid residence document is also an official identity document. This means that you do not always have to carry your passport with you.
照官网的说法永居要合法需要meet all the conditions, 那不就是说万一失业就不能续了?那永居还叫啥永居