Zhang Heng glanced at Armstrong and found him staring at the valley in front of him. It seemed he didn't notice the voice coming from the communication channel. As for mission control in Houston, every line seemed secure, and there wasn't any sign of interference there. Zhang Heng quickly came to realize that he was the only one that could hear the voice.
"You need to make a choice. You have only 19 seconds of fuel left," the voice reminded him.
Zhang Heng looked down again and found that the location was too rough for landing. The valley on the opposite side seemed no less dangerous as well. He also was oblivious to what lay beyond the valley. The surface might be just as rough on the terrain he was flying above right now. If he knew the exact amount of remaining fuel, he was more inclined to bet on this spot, but now, with the hint from the mysterious voice, Zhang Heng finally made up his mind and pointed the spacecraft to the valley.
