People will grow up, and things and people will keep changing.
Nothing is static, and nothing lasts from childhood to adulthood.
Siya Ze had a beautiful family when he was young, but it was broken up when he grew up. Tan Siqi never felt warmth until he met Siya Ze when he was a child.
Siya felt that everyone would leave and change. Later, Tan Siqi made him believe that there was someone waiting for him and would not leave or change because of time.
It also made Si Yaze believe that love will never change no matter when.
A little cold x sun-damaged
Intention: Everything in the world, only love is eternal