The famous Chinese cardiologist Zhang Shu, 56, was the main official at this year's World Congress of Arrhythmias, which was held in Beijing from Sept 17-19.

As the secretary-general of the World Society of Arrhythmias that is held once every four years in different countries and regions, it was Zhang's responsibility to helm the event's smooth conduct. He is highly likely to become president of the society from 2017 to 2021, according to the rules of the body.

Cardiac arrhythmia, or irregular heartbeat, is also of immense significance to China as an increasing number of heart-related problems are reported from several parts of the country.