Is All of Her coming back?

Yan Zhen married into the Anshi Group as a young lady, but found herself widowed within a year when her husband mysteriously disappeared on their wedding anniversary. Four years later, Yan Zhen has become a determined assistant manager of the company, ready to declare her husband dead when she suddenly comes across his "return". The man in front of her is identical in appearance to her husband, but his personality has changed drastically, claiming to be her brother-in-law. This man is constantly against Yan Zhen, believing that she was the mastermind behind the accident that happened years ago, while Yan Zhen really seems to be hiding a secret.