My Missing Valentine

When an all-powerful Superintelligence chooses to study the most average person on Earth, Carol Peters, the fate of the world hangs in the balance. As the A.I. decides to enslave, save or destroy humanity, it’s up to Carol to prove that people are worth saving.

In 1930s China, village girl Qian Xiao gains the power to control time, making her a target of powerful forces. As she uncovers the metropolis's hidden secrets, she faces peril and the cost of her gift.

Not until three years after the death of her husband Jolly, Kay dares to move back into their former home, persuaded by her new fiancée Rupert. But soon her worst expectations come true, when not only her old memories haunt her, but also Jolly's ghost, who doesn't approve of her new mate. Invisible to anyone but Kay, he tries to prevent the wedding.

The story of the forbidden relationship between a 'low born' boy and a 'high born' girl in an alternate reality where every person's relationships and life worth are determined by their innate 'frequencies'.