Yiannis Exarchos, head of the Olympic Broadcast Services (OBS), attends the first World Broadcaster Briefing (WBB) for Beijing 2022 in Beijing, capital of China, on Feb. 26, 2019. Olympic Broadcast Services (OBS) will adopt cutting-edge technologies to make the 2022 Beijing Winter Games more tech-driven than any previous Games, head of the OBS told Xinhua during the first World Broadcaster Briefing (WBB) for Beijing 2022 held here this week. (Xinhua/Xu Zijian)