Is the Heroine's Child Mine?!

This is the story of a crossdressing prince who mistakenly believes he is raising a wife and daughter for his twin brother, only to discover he's been caring for his own family all along. Prince Su Yanxi takes his brother's place on a diplomatic mission to the Wei Cang Kingdom, primarily for a marriage alliance. Instead of finding a wife, he encounters a little girl who might be his daughter. The girl, small and malnourished, clings to Su Yanxi's pant leg, looking up at him with tearful eyes and calling him 'Daddy.' Though reluctant to admit it, Su Yanxi notices the striking resemblance between them. Five years ago, Nan Jiyan lost herself to a stranger, and when she finally saw his face, the child's father forcefully married her. As she began to develop feelings for him, he revealed, 'I am a woman, and that day it wasn't me.' Shocked, Nan Jiyan realized the child's father wasn't who she thought. Su Yanxi, however, gently wiped her tears and said, 'But it was me who married you, who shared the wedding chamber with you.' Eventually, she learned the truth: it was indeed her, and the child was theirs. The story features a cunning and unpredictable protagonist paired with a seemingly soft yet strong-willed partner. This is the story of a crossdressing prince who mistakenly believes he is raising a wife and daughter for his twin brother, only to discover he's been caring for his own family all along. Prince Su Yanxi takes his brother's place on a diplomatic mission to the Wei Cang Kingdom, primarily for a marriage alliance. Instead of finding a wife, he encounters a little girl who might be his daughter. The girl, small and malnourished, clings to Su Yanxi's pant leg, looking up at him with tearful eyes and calling him 'Daddy.' Though reluctant to admit it, Su Yanxi notices the striking resemblance between them. Five years ago, Nan Jiyan lost herself to a stranger, and when she finally saw his face, the child's father forcefully married her. As she began to develop feelings for him, he revealed, 'I am a woman, and that day it wasn't me.' Shocked, Nan Jiyan realized the child's father wasn't who she thought. Su Yanxi, however, gently wiped her tears and said, 'But it was me who married you, who shared the wedding chamber with you.' Eventually, she learned the truth: it was indeed her, and the child was theirs. The story features a cunning and unpredictable protagonist paired with a seemingly soft yet strong-willed partner. Title: 虐言女主的崽是我的？！ English title: " The Heroine Child is Mine?! Author: 白念君 Link: https://www.jjwxc.net/onebook.php?novelid=6290567