First person perspective
Big changes, big changes, the story line has not changed, it is presented in another form.
Huaiting×Liu Yuan
"Do you still remember that brother who always took one away from you when you bought two lollipops?"
"You must remember, I have been calling you for 5 years! How do you know?"
"An'an, why did you forget Brother Ting?"
Hehehe
Intention: Everything you do from the beginning has a purpose