When Youyou was born, she had to breastfeed him, and this coincided with her studies. It was the toughest period of her life. She could not even sit through confinement properly. As she was accepted into a prestigious university, her workload was heavy. Whenever she was free, she had to catch up with overdue work. On a normal day, she had her part-time job while she took care of Youyou. Her body was on the verge of collapsing.
After graduating from university, she managed to land herself a high-paying job, hence the family's financial situation improved. With her adoptive mother and sister staying at home while she was out working, she was afraid of Youyou being treated in the same way as her by them.