After marriage, I discovered I was the white moonlight

Intro: For three years, Jiang Mian was the secretly wedded wife of Ji Zhixiu. Shen Tingyu, Ji Zhixiu's ex-girlfriend, returned to the country. Seeing Jiang Mian's face, which bore a slight resemblance to hers, she thought, "She's back. This substitute can get lost." With an arrogant air, she addressed Jiang Mian, "Are you Zhixiu's girlfriend?" Jiang Mian shook her head. Shen Tingyu rejoiced inwardly, knowing Zhixiu had always held her in his heart. Jiang Mian thought to herself, "Not a girlfriend, but a wife."