If I were to ask teenage girls what quality they would like in a man, I guess most would say that they want someone goodlooking. I am sure that quite a number of ladies in their twenties, thirties and more would also say that they to would like someone handsome. However, that is a superficial quality. Looks do fade with time, you know.
To me a quality I find most attractive in a man is that he is filial to his parents. I was taught that a man who is filial to his parents would find it easy to make a living. I guess that many adult ladies would also find this quality really appealing in a man.
Here is an article about Wu Chun and his dad that should serve as an example to all the sons out there.

Wu Chun gets emergency treatment for his father's legs, a sympathetic mature woman reassures him
Chun is very filial to his parents, even more important than dating girls Last night he took his ,Mr Wu Jing Tian, to the doctors and during the whole treatment process Wu Chun diligently stayed by his father's side, taking out his laptop to help his father pass the time. He was so thoughtful and filial that the mature female assistant at the clinic felt touched and held Wu Chun's arm. When hot ointment applied to Wu father's leg, he showed expression of pain.
Because his mum passed away early, Wu Chun is very attentive to his father's health. Yesterday at 5pm in the evening, Wu Chun took his father to a clinic in Guang Fu South road to receive a full spine Tui Na treatment (a form of Chinese therapy). After a diagnosis from the doctor, Wu's father had a hot ointment applied to his knees and appeared to be in pain. Wu Chun seeing this quickly took out his laptop from his bag, hoping it would divert his attention and lessen the pain.
While the doctor explained the condition and what needed to be taken special care of, Wu Chun listened attentively. He also followed instructions from the doctors on how to massage his spine. Seeing the handsome celebrity being so filial, all the workers at the clinic felt so moved. Before leaving a mature woman at the door grabbed onto his arms and told him not to worry. In Jin-Men dialect "It's ah Chun", making people spit out their rice Wu Chun said because his father used to lift heavy objects, the nerve in the spine suffered oppression, resulting in both his legs being weak so he cannot walk long distances. Originally western doctors advised him to have an operation but after Chun made a lot on inquiries and also did more research on the internet he decided to take his father to see the Chinese medicine doctors.The relationship between Wu Chun and his father is very subtle, when he was younger he was closer to his mother, so the father and son find it embarrassing to show their affection for one another, Wu Chun said "I can't bring myself to hug my father." But every time when his father phones him, Wu Chun will drop what he's doing and answer his phone and in a serious Jin-Men accent say "Ba (dad), it's Ah Chun" almost like the dialog in the advert of a "honorable soldier", forcing all the staff to spit out their rice, but hearing him tell his father to "look after his health" they all felt moved.