When my sister married into a wealthy family, her in-laws gave her an antique bronze mirror carved with lotus blossoms, saying it would "protect the mother during childbirth." She hugged the mirror and smiled, while I helped her adjust her wedding dress. My fingertip accidentally brushed against the mirror, a sharp pain I ignored. Later, my sister had five children in eight years, her skin so smooth during pregnancy it looked like it could be pinched to release moisture. The day after giving birth, she posted a photo of herself working out, earning her the title of "ageless, hot mom from a wealthy family" from netizens. Meanwhile, I've been married for seven years without getting pregnant, my waist and abdomen are covered in stretch marks, and I experience urinary incontinence after walking just a few steps. Doctors couldn't find the cause, only saying it looked like I'd experienced multiple difficult births. Until the day my sister gave birth to her fifth child, I suddenly...