Gu Yu is regarded by everyone as the proud son of God. He handles both studies and family affairs with ease, and he habitually takes care of Sun Yun - he plans all the routes for her at the airport when traveling abroad, and remembers all kinds of trivial matters for her in life. Together with their common friends Wen Yining and Lin Yiyang, as well as Gu Yu's friend Xu Xingzhe and Sun Yun's best friend Xia Zhi, they all have defaulted to the mode of "Gu Yu is here, Sun Yun doesn't have to worry". He always calls her "Little Yunduo", and he can't hide the tenderness in his tone.
Sun Yun always seemed confused in front of Gu Yu, but only Gu Yu knew that his little Yunduo was not really ignorant - she was as shrewd as anyone else, but she was just willing to let go of all her defenses around him.
The affection between them has long gone beyond ordinary friends. There is so much unspoken feeling hidden in the eyes when they look at each other that even others can easily detect it. When the "easy-going" Gu Yu meets Sun Yun, who is "soft on the outside and wise on the inside", the bond that started when they were young will eventually grow into the most touching form over time.
Intention: True intimacy is to be able to show your softness safely around the other person (such as Sun Yun being "little confused" in front of Gu Yu), and also to be able to see the light hidden under the loose appearance (such as Gu Yu knowing Sun Yun's shrewdness). The bond between childhood sweethearts and the two-way love has nothing to do with attachment and being attached, but two independent and compatible souls, protecting and achieving each other in the long-term companionship - just like the island tolerates the freedom of clouds, and the clouds also know how to stay for the island. Their feelings and growth are exactly the most gentle appearance of "evenly matched".