I think it's mainly because of the plot. It's about Xincheng Renhe Hospital. Nurse Zhang Shumei was suspected of using the wrong medicine, which led to the patient's death and forced him to leave his post. His 4-year-old daughter was abducted by traffickers. Zhang Shumei was in a trance and died in a car accident two years later. Owen Zhuang (Jin Dong), a Chinese-American surgeon, comes to Renhe Hospital in Xincheng to seek the truth about his mother Zhang Shumei's car accident 30 years ago and find his missing sister. At that time, Lu Chenxi (Bai Baihe), the daughter of the deceased, and Bo Wen (Ma Shaohua), the master, were both attending physicians in thoracic surgery when they grew up, but they were transferred to the emergency department because they repeatedly offended Yang Fan (Liu Yijun), the director of thoracic surgery. Owen Zhuang brought skilled Lu Chenxi back to the chest operating table many times. Sooner or later, Owen Zhuang's medical skill amazed Lu Chenxi, and his consideration for patients also made Lu Chenxi reflect. They gradually fell in love. Finally, Owen Zhuang found her sister and restored the truth of her mother's accident with the help of Lu Chenxi.