Pointing to the clock on the wall of a clinic in Sanrao, a small town in Chaozhou, about 400 kilometres from Hong Kong, the elderly woman asks: 'Is it half-past nine?'
For more than two years, the woman, from a rural family, had lived in darkness. She was blinded by cataracts in both eyes and relied on her senses of touch and smell to accomplish chores such as preparing meals for her family.
Like millions of cataract patients in small mainland villages, she had resigned herself to a life without sight.
But on Boxing Day her life changed completely - she regained her vision, a day after she underwent a cataract operation. For the first time in two years, she could see the clock, and the faces of her loved ones.
Standing next to her at the clinic that day was Chinese University professor Dennis Lam Shun-chiu, who recently set up the first cataract clinic in Sanrao.
The disease, the clouding of the eye's crystalline lens that works like an auto-focusing lens on a camera, is the leading cause of blindness worldwide.