A. Tourist / family visit (L)visa:

Those who go to China for sightseeing, family visit or other personal affairs can apply for Single entry visas, usually valid for 3 months, or double entry visas, usually valid for 6 months. Based on various situations, Consuls have the authority to require applicants to present documents deemed necessary.

Så står det på chinaconsulates hemsida. Är det några speciella omständigheter som göra att man får stanna i 6 mån?