Chinese Tourist Visas now come in several flavours:
Tourist Visas - L visas
This is what you should apply for if you are going on holiday to China. The length of stay for each entry is usually 30 days. You can ask for more than 30 days, if needed and if supported by documentation.
Tourist Visas for visiting relatives with Chinese Passports or Permanent Residence in China - Q visas
Q1 visa - Single entry for stays of over 180 days;
Q2 visa - Single / Double entry for stays of less than 180 days.
This is what you should apply for if you are going to visit Chinese family in China (who have a Chinese passport or permanent residence). The advantage of these visas over a Tourist L visa is that you can get a longer stay with the right documentation. For a Q1 visa (stay over 180 days), the relative(s) to be visited are limited to your spouse, parent, mother and father in law, sons and daughters, son and daughter in laws, siblings, grandparents and grandchildren. Q2 is less restrictive.