I'm invested in the drought subplot. Zhao Xingyue mentioning the lack of rain for two months and worrying about crop failure shows she's thinking long-term. It's a smart layer that adds urgency beyond just the marriage issue.
Tang Weiyu’s jealousy about the pendant while still trying to act sweet is such a believable reaction. She can’t stand giving it back, and it’s obvious. That little possessive streak adds a layer to her character beyond just “evil mistress.”
The part where Olaf tries to murder Ragnar at the banquet was gaslighting at its worst. Olaf is such a snake, pretending to be friendly then ambushing him.
The scene where Yu Bai shows the crystal core to her brother and mom was tense. I was worried they wouldn't believe her, but the family bond is strong. The brother's instant reaction to the crystal core's energy added a layer of mystery.