File photo shows Chinese medical staff making cardiology examination for a Cambodian child in Phnom Penh, Cambodia, in 2019. The ongoing China-Cambodia Love Heart Journey project has not only saved the lives of dozens of Cambodian children with congenital heart disease (CHD), but also bridged hearts of peoples of the two countries. Launched in January 2018, the China-aided project aimed to provide 150 Cambodian children who have CHD with free surgery or treatment at the Fuwai Yunnan Cardiovascular Hospital in Southwest China's Yunnan Province. (Photo by Chea Monyrith/Xinhua)