Song Xingheng, who was born invisible, has been bullied by other children in the orphanage, but he met the Song family couple who came here to adopt their son, and also met the most important person in his life, Song Qingshan. Although the Song family was not very wealthy, Song Qingshan wanted a younger brother, so they came to the orphanage to adopt a cute and well-behaved child. Sticking together forever, although Song Xingheng's eyes can't see, Song Qingshan is willing to be Song Xingheng's eyes for the rest of his life. It is this promise that Song Qingshan chose to study medicine, just to cure Song Xingheng's eyes. When Song Xingheng was in high school, the Song family took him abroad for treatment and study. They were separated for 7 years. During these 7 years, Song Qingshan also made great achievements. His research results are methods that can cure Song Xingheng's eyes. But God was unfaithful and an out-of-control car crashed into Song Xingheng. In order to save him, Song Qingshan paid the price with his life. Later, Song Xingheng's eyes recovered, but what he saw was a cold black and white photo.
Purpose: for love