Some translations in enlish about the drama plot, production, characters, costumes, cast etc. that I find particularly compelling to read. If you have more, feel free to ad, I follow this because of te novel Zhu Yan.
https://bunnylovereader.wordpress.com/2023/12/30/legend-of-the-hidden-sea-exclusive-report/

https://bunnylovereader.wordpress.com/2023/12/30/the-legend-of-the-hidden-sea-a-report-by-producer-chunyu-pictures/