Interpretation of the latest 2026 data on IVF surrogacy success rates for second children at advanced maternal age in China, covering real success rate analysis for ages 35 to 50, scientific methods to improve success rates, and recommendations for authoritative institutions. In-depth reviews of Tulip Reproductive Center, Kyrgyzstan Tulip, and Thailand Onelifewanlai Reproductive Center. WeChat consultation: Gu_SH016, Mobile: 13880857038.