The Shenzhou-14 taikonauts conducted their first extravehicular activities on September 1. Chen Dong opened the gate of the airlock cabin of the Wentian lab module and took the lead in going out of the cabin. Later, he and his teammate Liu Yang outside the cabin will work with Cai Xuzhe inside the lab module to install an expansion pump group for the Wentian lab module and lift the panoramic camera. Extravehicular activities are expected to last about 7 hours.