At first, Xu"s decision to take the assignment began with a sense of responsibility. "Representing our country on a medical aid mission is a great honor," he told the Global Times.

　　Working in PNG gave that responsibility a direct, personal meaning. Through treatment, he said, doctors could help local people experience the benefits of cooperation in their own lives.

　　The experience also deepened his appreciation for the stable environment and healthcare support available at home. That backing extends into the team"s daily work abroad, through specialist advice, equipment and supplies from China.

　　"I am grateful to our country, which is always quietly supporting us," Xu said.

　　Let local doctors take the lead

　　An operation becomes a teaching opportunity when a local colleague takes the lead and the visiting specialist guides each step - Xu describes this as a central responsibility of the medical team.

　　"What matters more than performing the operations ourselves is teaching local doctors how to perform them," he told the Global Times. Teaching continues during surgery, as Chinese specialists explain procedures and help colleagues develop the skills to carry them out.

　　At Port Moresby General Hospital, that process is changing how pacemaker procedures are performed.

　　Before the current team"s arrival, the hospital conducted approximately three to four pacemaker implantations a year, with electrodes placed at the tip of the right ventricle, the Global Times learned from the team.

　　Chinese cardiologist Zhang Xiaoliang introduced additional implantation techniques, including left bundle branch area pacing. This approach places an electrode near the heart"s natural electrical conduction system, helping coordinate the contractions that pump blood.