6 decades books

Wang Fei have a happy family,a well pay job,an enjoyable friends. He also have a loving partner.Never cross in his mind that one that, he will left them not because old age. But due to betrayal. He swore to have his revenge. Unfortunately,,he lost his memories after he reborn. Getting up in empty room, he make a deal with so call system. A deal to regain his memories and body.