The 42-year-old, who debuted in showbiz after participating in the Miss Hong Kong 2000 pageant, shared in a Douyin Reel published on Sunday (March 30) about her experience.
She said: "When I was in TVB, I had worries about my age, just like everyone else. I was frequently worried about retrenchment… Facing a bottleneck in my career and being unmarried at the age of 30-plus, I decided to leave showbiz and try to develop my career elsewhere.
"But it wasn't as easy as I thought… So what if I told others that I have acting experience and participated in Miss Hong Kong? These couldn't help me find a good job."
She added in the Reel that after much consideration, she decided to set up her own street stall in Foshan Kungfu Market.
In another Douyin Reel released the next day, TVB actor Vin Choi asked her if she was ready to become a street vendor, bearing in mind the tedious work and that she could get laughed at.
"I am not afraid. I want to learn how to set up a street stall business and become the queen of chicken feet," she said enthusiastically.
Casper appeared in Hong Kong dramas such as Virtues of Harmony (2001), To Love With No Regrets (2004), Just Love (2004) and Forensic Heroes (2006), but did not have acting projects after 2015.