"A large number of people can participate in the 3D event which is held in the open at the same time. So Modi is focusing on organizing as many public rallies through 3D appearances as possible. Chai pe Charcha was proving more time-consuming and was technically more complicated than 3D technology," a source said.
https://www.youtube.com/results?search_query=Chai+pe+Charcha
https://www.youtube.com/results?search_query=3D-holographic+public+rallies
