Time Travel and Tears of the Fallen City

"Do you remember this necklace? This is the token of love I gave you. It was originally a ruby necklace, but it was dyed green because of your tears!" "I don't know what its previous name was. From now on, I'll just call it Tears of the Falling City..." "I leave it with you now, as if I have always been by your side, accompanying you..." "Qingcheng, please walk slowly... Wait for me! Wait for me. After I have avenged you, I will come to accompany you!" "With me by your side on the road to hell, you won't feel lonely or scared..." "In this life, I failed to protect you. In the next life, I will definitely not let you be harmed at all..." Because of a necklace, Zuo Qingcheng accidentally traveled through time and space to complete the regrets that he had not completed in his previous life. Will the tragedy of the previous life happen again? Destiny has given her another chance, can she grasp her own destiny...