Ji Xiao traveled through time and space through the music box given to him by his brother Ji Yao. After countless attempts to save Ji Yao failed, he tried to find the real cause of Ji Yao's death. At the same time, he discovered that Ji Yao's diary would keep changing, and finally discovered the real cause of Ji Yao's death...
Fate is always so cruel. It pretends to give you a seed full of hope, and at the same time it clears away the haze for you and fills your world with sunshine. However, while you are happily waiting for the seed to grow, it gives you a fatal blow and pushes you into the abyss.
But Ji Xiao would not give up easily.
Concept: Indecision when faced with problems, quantum mechanics