She rushed to a hospital in the city of Xiamen, on the east coast of China, and saw ear, nose, and throat specialist Dr Lin Xiaoqing.
It took a team of doctors a while to link her weird symptoms to a disorder, but they were eventually able to diagnose called "reverse-slope hearing loss", which means she is only able to hear high frequencies.
According to doctor, Chen could hear everything but can't hear the voice of a young men patient who walked into the room.
Dr. Xiaoqing reported Chen could hear her voice perfectly fine during the appointment, but she couldn't understand the voice of a male patient who was also at the hospital. That is just one in every 12,000 incidents of hearing loss. Treatment can involve high doses of steroids, but sometimes the condition goes away without any treatment whatsoever, she added.
The site says an estimated 3,000 people in the US are affected - so just one out of every 12,000 cases of hearing loss.
As well as struggling to hear low-frequency voices, those with the condition can find it hard to hear voices on the phone properly, as well as low noises like the hum of the fridge or thunder.
Normally hard to diagnose, it can often go unnoticed. In Chen's case, RSHL was preceded by an extremely stressful period - which her doctor says may have contributed.
And most surprising thing was that she could hear the voice of women, but not that of men.
It can be caused by genetics, meaning people have never been able to hear lower sounds - such as the hum of a fridge. Chen said that she has been working a lot lately under pressure. Chen is expected to receive her complete hearing back soon with the medic monitoring her recovery.