will I be confused if I didn't watch the other two Fox Spirit series?
You will not. There is flashback to keep you understand the plot. So the series can be watch stand alone. But watching Love in Pavilion ( FSMM2 - WQ Fugui parent's story) will make you feel more.
I didn't understand why Dongfang Huaizhu is refered as a concubine here?? Wangquan hongye did have any wives besides…
It was explain in Love in Pavilion. HY has to marry HZ as concubine because he need to take her away asap from evil senior. Without the marriage contract and proper arrangement between two families, he couldn’t marry her as a main wife. And all HZ family was killed and kidnapped, left only the betrayer. HY was using WQ fam pressure to take her away.
Fsmm1 was different team. 2 and 3 were the same team.
"I am injured, you stabbed me!" And cousin, you have become an outsider! Lol! 😂