Priority Pass has really been a boon for me since I got it last year. Almost all airports I've been to in China have at least one PP lounge. I fly from Hangzhou a lot -- the new T4 only has one not very good PP lounge, but the older T3 has 3 or 4 options. Shenzhen only has one bad PP lounge. But still, it sure is nice to have access to so many lounges unlike in the US where SEA has 2 (The Club by A12 and The Club in the south satellite), but LAX and SLC have none, ATL has one in the F international concourse that you have to wait to get in, if lucky.

Star G is great for Shenzhen Airlines and Air China. Shenzhen Airlines has some good lounges plus some of the best inflight service of the domestic carriers.