In the face of the foreseeable unhappy ending of this relationship, Li never wanted to promise to give up anything. He left alone and just lost himself. Promise. Yes, I promise. He chose to carry out Li's decision. Even at all costs, there is no Li Jue in his world. Life is long and there are many happy things. He should remind himself not to be happier than that summer. Maybe I know Li definitely.
Story development
Gentle and talented researchers, calm rich children, once every 50 years, the climate is warming and glaciers are melting, and extremely hot summer will become a common occurrence. But in the news at that time, it was said that in the summer of 50 years, on the day when the temperature reached the highest value at noon, Li must have seen the promise for the first time.
If he hadn't kept his promise, Li would have committed suicide in northern Europe 20 years later, but the news said that Li must have kept his promise in the summer of 50 years, so he later let himself remember that past and distant love for the rest of his life. After the separation, the promise is still the happy orange, but he has a thorn in his heart, and he will still regret it when he recalls it, and he will feel uncomfortable and can no longer like others.