Continuation of The King's Dancer! Xie Lian thought he'd finally settled into his new life in WuYong with the king as his soon-to-be husband/mate. He'd expected the hurdles that lay before them, some of them at least, and he'd even thought he could be genuinely happy again after the tragedy that had hit Xian Le about...
After being sold off to an unexpectedly handsome king, White Lotus Xie Lian came to rather enjoy his work as the king's most favoured concubine. (There are mentions of other concubines, but no description of Hua Cheng interacting with them)
Xie Lian came back to the Ghost City after helping to rebuild and reconstruct the Heavenly Capital. He discovered something that's been going on behind his back.