A beautiful scientific experiment demonstrated Taikonaut Wang Yaping on the lecture. The taikonaut showed the way to “paint” Olympic rings in space with different colorful pH indicators. The lecture was devoted to Winter Olympic games.
Source: https://news.cgtn.com/news/2022-02-03/Spacelog-Taikonaut-paints-Olympic-rings-in-space-with-pH-indicator–17lGZuRYwDu/index.html
