Pop singers Miriam Yeung Chin-wah and Daniel Chan Hiu-tung are hoping to raise awareness of children affected by Aids in Shanxi, one of the poorest provinces on the mainland. The Unicef (United Nations Children's Fund) ambassadors will leave on Saturday for a week-long trip, accompanied by a TVB crew. A documentary on the visit, to be broadcast on TVB Jade Channel, aims to raise money for Unicef's China Children's Health Fund. Unicef points out that Aids is prevalent in Shanxi because many rural villagers sell blood to make ends meet. Their average annual income is about 1,000 yuan ($943), but they can earn 50 yuan each time they sell blood. The blood donations are usually conducted in clinics with poor hygiene, which spreads Aids. Many children are orphaned when their parents die of the disease. Yeung said she would treat the children as friends instead of patients and play games with them. She also hopes to teach them how to avoid contracting Aids and maintain good hygiene.