Criteria for an 'Inviter' for a tourist visa when not staying in a hotel

I am planning a trip to Shanghai in October travelling as a tourist for a stay of 6 days. I am planning to stay with my brother who has been there on a work Z for the past 2 years.

Is it sufficent to provide his contacts details and address as an 'inviter' or do I need to ask one of his friends who have permanent residency to invite me?