The name of the TV series is "There is a Mystery in the Mind". I know it very well because I have this TV series at home. Yao Yingying plays Xing Feng, a nurse who works in Zheng Jiaying's hospital. Her girlfriend is not played by Tang Shiyong, but by Jiang Zhini. Her name is Carmen Fang Yayan. Carmen is afraid that her mother will know that she is gay. At the same time, she also knew that Zheng Jiaying liked her, so she took advantage of him and pretended to be dating him. At the beginning of the TV series, Xing Feng and Carmen seemed to be enemies. Many people in the series also thought that Carmen and Xing Feng were love rivals, and that Carmen and Xing Feng's husband were having an extramarital affair. Before Carmen and Zheng Jiaying "dated", she thought she liked the psychiatrist Wallace, played by Chen Jinhong, but when she hugged him, she realized that she didn't love Wallace at all, and her favorite was always Xing Feng. Carmen once knitted a scarf for Xing Feng with 'Clt; 3F' embroidered on it. Later, Feng Shui master Ying Lingshan, played by Teng Liming, discovered it.
This drama was from 2003, so what the poster saw should be a rerun. I personally don't like this drama very much, and I really hate Zheng Jiaying's character and Teng Liming's appearance. Chen Jinhong's character is also too bad of a good guy.