Yes, China driving license be used in Germany for 6 months.

But you have to bring the German translation which legalized German embassy in China together with your Chinese driver's license.

International Driving Licences in Germany

For holders of EU or EEA licences, an international driving licence does not offer any added value for driving within the EEA, as it always has to be shown together with the Community model national driving licence.

Those from outside the EU may apply for an International Driving Licence in their country of origin. They may drive in Germany with an international licence for one year, but must also carry their national driving licence. However, once officially resident in Germany all non-EU drivers should obtain a German driving licence.