A lock without a key is scrap metal, a lock without a key is trash
Shen Luxi is the key. He was born to open the lock. But if Lin Qingyan keeps locking himself, the key is meaningless. Lin Qingyan is the lock. He has locked himself for eleven years, waiting for the key to open. But if Shen Luxi does not come, he will be rusted inside forever.
The key and the lock are both incomplete without each other. The key waited for the lock for seventeen years, and the lock locked itself for eleven years. But in the end, the key opened the lock and locked the key.
They belong to each other
Concept: Love is waiting, but also rushing towards. Key and lock, both are indispensable.