a few Thai actors have gone to acting in China - Mile Angelo, Non Chanon Santinatornkul, God Itthipat Thanit, Push Puttichai Kasetsin did the drama Stairway to Stardom because of his popularity in China. Thai-Malay actress Aom Sushar Manaying is in a Chinese drama called Rainbow Town. There's a few more but I don't remember names. One thing I've noticed is that some of these actors have slightly changed there appearances to get cast in dramas in China.
So Suk Hee's Mum comes from a wealthy family and she had an arranged marriage with Mo Chul Hee. They got married making Suk He''s mother the first wife But Mo Chul Hee abandoned Suk Hee's mum and had an affair with Suk Hee's step mum. They have two sons but he was still married to Suk Hee's mum. Then Suk Hee was born and Suk Hee's mum was forced to live in seclusion. Suk Hee Mum no loner had power and The boys mum (Suk Hee's step mum) became the 'frst wife' but not legally till after Suk Hee's mum's death.
Origin: Australia / China
As an Aussie I'm curious