Wang Guanzhi, a 28-year-old university teacher, had been busy dating until he met Zhang Yu, a swimming coach from his hometown.
She found that the gym owner was even more insecure than herself.
Zhang Yu has been living in a haze because his teenage friend drowned after missing an appointment, which made him even more uneasy as a left-behind child.
While teaching his children to swim, he silently protected his sweetheart.
His friend's sister threatened him, but he silently made plans for Wang Guanzhi.
His parents asked him to borrow money, but he refused. Everything is about her.
The first time he saw her, he was responsible for protecting her happiness.
