Hi, Venus (had good reviews about how realistic the relationship was, they always communicated, advocated for themselves, etc.)
The Story of Minglan (just keep in mind this is a slowburn and romance is not the main focus)
Seconding awkward potato's recs
Just keep in mind that You Are My Glory has an aerospace focus too..really good romance because they support each other but also grow as individuals
New Life Begins has a bigger focus on sisterhood...the romance between the leads is really cute...the male lead is respectful of her choices and let's her do what she wants without feeling/needing to intervene to save the day like other drama leads do.