On September 21 1941, the Kyoto Imperial University observational group for terrestrial magnetism in North Taiwan and many from observatories started a mission to capture the sun. The observation at Taipei was mainly to figure out changes in terrestrial magnetism and weather.
At the same time, in Central China, the scientific volunteer corps protected by soldiers waited for the eclipse. Two groups from Tokyo Imperial University and the Kyoto Imperial University set up the Einstein camera, a prism and a polarized camera.