Firefighters from childhood friends have not been added or deleted in the second season.

childhood friends are introduced as follows:

childhood friends (pinyin: q and qīng méi zhú mǎ ?) is a Chinese idiom originated from the works of literati, and the related allusions of idioms originated from Li Bai's Long March.

"childhood friends" (bamboo horse: a bamboo pole when riding a horse) describes the innocent play between men and women when they were young, and also refers to young men and women who have been lovers since childhood. Spoken and written language is universal, with many commendatory meanings, and can be used as predicate, object, attribute and adverbial in sentences.

in ancient times, there was an old street in Nanjing called "Changganli", which was inhabited by vendors from south to north. There are two neighbors, both of whom have only one child: one is a boy and the other is a girl. These two children are innocent and have been playing together since they can walk.

One day, the little girl picked some beautiful wild flowers in front of her house and played by herself. Another little boy of about the same size put a bamboo pole on his crotch as a horse, and ran from one end of the alley to the other, saying, "Run, run!"

His face was red, he was sweating and panting. From time to time, he ran to the little girl and asked if his horse was fast. The little girl smiled and clapped her hands to praise the boy's horse. Hearing the praise, the little boy proudly rode back and forth in the alley with a bamboo pole in his hand. The little girl leaned back against the door and looked at the little boy running back and forth in the alley with a smile.

after a while, the two men played the game of throwing green plums again. I saw them holding hands came to the courtyard, around the courtyard of well field, you throw the green plum, I throw the green plum in the past. The two men were so happy that they didn't want to part until it was dark for dinner and went home.

The little girl in the story grew up with her beloved little boy, and finally became his bride. The scene where they played together in childhood was particularly touching. As time goes by, the game of "childhood friends" between boys and girls in ancient times has become a house today.

When people grow up, they look for true lovers in the vast sea of people, but in their memories, there will be more or less a boy riding a bamboo horse or a girl who made childhood friends, and the innocence of childhood will always warm their hearts.