China Southern Airlines, a Skytrax rated 4 out of 5 stars have round trip airfares travelling from San Francisco (SFO) to Taiyuan China (TYN) for $498, making 1 stop in Guangzhou. The return flight's stopover will be about 23 hours (overnight layover). On the longer trip, the aircraft is the roomy Boeing 787....if that makes a difference for you.
Where is Taiyuan? I have no clue. It was on my spreadsheet, flagged discounted. I attached a screenshot of a locator map, in relation to Beijing. Also, linked below is Taiyuan's Travel Guide.
Departs SFO: April 21, 22, 24, 26, 28, 29; May 1, 3
Returns: April 30; May 1-31
To book this, enter travel information on Expedia [expedia.com]
. Bundling hotel with airfare will save money.
Taiyuan Travel Guide [travelchinaguide.com]