That isn’t a long ass name. Whoever is translating for Viki is giving the temple name of King Yi Seong Gye who…
Viki is correct. Taesangwang is the title for a retired king. Sangwang is another title similar to Taesangwang. The two retired king at this point would be King Taejo - the Taesangwang (the king's father and 1st king of Joseon) and King Jeongjong - the Sangwang (the king's older brother and 2nd king of Joseon). The king's father and older brother abdicated the throne. They used the different titles because they are referring to two different kings.
Did Lee Si Young actually speak Japanese language that fluently? Haven’t seen her for awhile since Red Sleeves.…
She had a dialogue coach helping her like Lee Jung-jae in The Acolyte. If she had been fluent, she wouldn't have needed a translator during promotions. She said a few words in Japanese, but that's about it.
The two retired king at this point would be King Taejo - the Taesangwang (the king's father and 1st king of Joseon) and King Jeongjong - the Sangwang (the king's older brother and 2nd king of Joseon). The king's father and older brother abdicated the throne. They used the different titles because they are referring to two different kings.
If she had been fluent, she wouldn't have needed a translator during promotions. She said a few words in Japanese, but that's about it.