The second class from China's Tiangong space station by Shenzhou-13 astronauts – Zhai Zhigang, Wang Yaping and Ye Guangfu – will be held at 3:40 pm BJT on March 23. 

The second episode of the "Tiangong Class" series will also be held as a space-Earth talk between the astronauts in space and the youth on Earth, aiming to ignite their interest in science and space.

This time, astronauts will conduct various experiments, such as crystallization of saturated liquid, liquid bridge and water-oil separation. They will also demonstrate the difference between throwing objects in space and on Earth, and introduce space science facilities.

The three Chinese astronauts went to space aboard the Shenzhou-13 spacecraft and entered China's space station on October 16, 2021, embarking on the country's longest-ever crewed space mission, of 6 months. The three astronauts will return to Earth in April as planned.