Yan Zhimeng

Appearance
When her appearance reflected in his eyes, it shook Ye Wuchen’s mind, like the feeling of falling into a dream. It was a very delicately perfect face without any blemishes, combined with an absolutely beautiful body that every woman dreamed of, shrouded with a noble and elegant personality, fresh and pure like a snow lotus, pure and holy like a fairy, completely different from Xue Feiyan’s charm.

History (spoilers)
Her body constitution makes her love her first man for her entire life, once the man dies, she will follow him.

Xue Feiyan used the poison 'Enthusiastic Heart Jade' on her and forced Ye Wuchen to take her.

She was the first woman of Ye Wuchen. CH 173

When she heard that Ye Wuchen had 'died' she was heartbroken and tried to forget about everything between them.

In the day of her wedding to Yan Ximing she suddenly felt sick and the physician said that she was pregnant, Yan Zhimeng filled with new hope wants protect Ye Wuchen last bloodline.

The wedding was told to be 'posponed' and Yan Ximing forced Yan Zhimeng to abort the baby.

She tried to escape but was still hit on the abdomen by Yan Ximing, Xue Feiyan decends and rescues her.

Xue Feiyan used all her power to save Zhimeng and her child, the baby was born but for the cost of the life force of Yan Zhimeng. Filled with guilt Xue Feiyan used her ice powers to freeze her because she doesn't want the child to lose both her father and mother. Xue Feiyan also sealed the whole Snow Palace so she didn't know of Ye Wuchen's 'return' 3 years later

When Ye Wuchen went to the Snow Palace the first person he met was his daugther who also felt his presence, he also met Yan Zhimeng who was frozen with her last bit of life force.

A year later Ye Wuchen used his new found powers to save Yan Zhimeng to be finally reunited as a family. He also married her together with Zhuge Xiaoyu the same year.