[[Mainland Chinese Drama 2018] Story of Yan Xi’s Palace 延禧攻略]

I just finished watching this series. The only thing I noticed tho was Fu Heng’s appearance. Although he was supposed to be the 2nd male lead and rival in love, he didn’t really have many scenes in the latter part of the series. They mostly mention his name and things he did but he rarely appeared, even during his last scene - they didn’t really showed him but just a blurry back (who may have been his double or stunt man).  
I wonder what happened? Was there a problem with the actor?