When Li Meili introduced her to jiu jitsu, Tang Moyu was already having trouble dealing with her pent up anger, which she couldn't show in front of her mother and her family. Even after she started working at Feng Conglomerate, she had still kept to her training routine whenever she had spare time out of her hectic schedule.
It was the only time she could truly be herself and could exert all her frustrations and anger out of her system. When she gave birth to her little buns, her time spent training dwindled as she barely had time for herself and could only do it sparingly once a month.
She knew that being born in a rich family and working at a high position in a company came with a set of risks ordinary people wouldn't have to face. There might be a possibility where she would face a dangerous situation, in which all her negotiating skills would fail to dissuade a possible attacker, leaving her with no other option but to protect herself.