Dr. Zhang was an apprentice Shen Bijun took on years ago when she was saving someone's life.
She remembered during a journey on a train, someone fell critically ill, and she needed an assistant to help with the treatment.
But the patient's condition was very severe, and it was clear that they might die without proper treatment.
The patient's family was not around, and no one could sign a disclaimer of liability.
Under such circumstances, few doctors would intervene for fear of inviting unnecessary trouble.
So, although Shen Bijun, while on the train, recognized several people's identities as doctors from their conversation, when she called for help, those doctors hesitated.
At that time, Dr. Zhang stepped forward and helped her.
Because of this, Shen Bijun held Dr. Zhang in high esteem and subsequently imparted to him a lot of medical knowledge. Dr. Zhang, eager to learn, stuck close to her. After getting off the train, he followed her everywhere she went.
