The next day.
Tang Yue left on the Mars Wanderer, taking with him a shovel and plastic sample box for soil samples.
Periodically he would head out to dig suitable soil meant for the plants' substrate. Now, the creation of soil substrate for planting in Kunlun Station wasn't as difficult as it originally was. The already fermented feces were used as fertilizer due to the sufficient number of activated microbes. It was like adding some old yogurt to fresh milk when creating yogurt as a primer.
"Tomcat, how many liters of soil do I roughly need this time?"
"Not much. It's up to you," Tomcat replied. "After Tianzhou 37 arrives, you won't need to rely on planting vegetables to provide nourishment for yourself. The spacecraft has soft-packaged canned peaches and oranges.