Mei Hanqing didn't want to defend Qiu Ruoxi, but she found herself unable to avoid doing so.
Qiu Ruoxi is Ye Xunhuan's wife—this fact, for now, is unchangeable. And when a man gets married, no matter what happens, the first person he should think of is, indeed, his wife.
After all, she's the one who will accompany you through life's journey, the one whose care you'll need for the rest of your days, the one whose participation you'll constantly rely upon!
Perhaps when you encounter certain situations or certain people, you might feel flustered. But you must always remember that, no matter what, you should confide in your wife.
Because she cares deeply about you!
The mistake Ye Xunhuan made was not telling Qiu Ruoxi—not giving her any prior notice. And when it came time to explain and apologize to her, he chose to use the words "unreasonable."
Maybe Ye Xunhuan didn't mean much by it, but in Qiu Ruoxi's ears, those words sounded unbearably hurtful.