This mom is often mistaken for her son's girlfriend... You won't believe how old she really is! ByAndrea Heckler, 05/24/2017 Gourmandize shares Share on Facebook Share on Twitter Pin it Share on WhatsApp Share on Google+ 4/5 Previous Next THE MOTHER THAT DOESN'T AGE! According to Liu, all her success can be credited to a healthy and consistent exercise pattern that she's maintained all her life. “I swim in the lake and do weight training every day. My favorite thing is swimming outdoors in winter.”