On Oct 12, three Chinese astronauts – Chen Dong (L), Liu Yang (R) and Cai Xuzhe – gave a space class. This time, they moved to a new classroom – the Wentian lab module (实验舱)! They showed students on Earth around the lab. They also did some fun experiments (实验). In the picture, Liu Yang uses a 2-meter-long straw (吸管) to drink mango juice. It’s hard to do it on Earth, but Liu does it very easily in space.