What is the relationship between Jiang Yu and Song Yan?

In My Fireworks, Jiang Yu and Song Yan are half-brothers.

In My Fireworks, Jiang Yu and Song Yan are half-brothers. In the novel, your mother was Meng's girlfriend before marriage, and later became Jiang Keqin (Jiang Yu's father)'s mistress, giving birth to Jiang Yu, who was raised by the Jiang family since childhood, so she and Jiang Yu are brothers.

Jiang Yu is a blind date arranged by her mother for Xu Qin, and they are a good match. However, Jiang Yu is a very independent person. He advocated marital autonomy and refused to pay for it. At the same time, Jiang Yu mistakenly became the director of the fire department and became a comrade-in-arms fighting side by side with Song Yan. Finally, Jiang Yu found his soul mate in the fire station, that is Tommy.

Brief introduction of my earthly fireworks story

My Human Fireworks is an urban drama about firefighters and doctors, directed by Li Muge and starring Yang Yang, Wang Churan and Wang Yanlin. Fire chief Yan Song and emergency doctor Xu Qin met again ten years later. When we met again, both of them had a lot of growth and changes. Due to the nature of their work, Song Yan and Xu Qin gradually crossed paths.

Song Yan led the firemen in Shilitai to fight bravely for the safety of people's lives and property, but after countless tests of life and death with blood and fire, they still did not change their original intention. His persistence infected Xu Qin, and the knot that had troubled them for many years was gradually untied. The two overcame family resistance and finally came together again, encouraging each other and making progress together, and guarding this beautiful city with their own expertise.