 
          But there was limited space in the underground, forcing some of the Martians to migrate to
        
        
          other planets. This silver device on my wrist is a brain interference control monitor. It can sense
        
        
          my need and automatically activates. It interferes with my brain or other creature’s brains. I don’t
        
        
          actually know how to speak in human’s language, but this device interferes with your brain so
        
        
          that you can understand my language. It can also make me invisible so that human can never
        
        
          discover our existence. In case they do, we will have to capture them and we will use another
        
        
          device to erase all their memories. Leave now and leave quietly. Don’t let any other Martians
        
        
          discover you, they will erase your memory and you won’t even recognise your parents.”
        
        
          “Oh Karu, please, take me back to my dad’s camp site.”
        
        
          Karu said, “I will lead you to the secret tunnel that connects the upper-ground.”
        
        
          Suddenly, shouting echoed from the back of the tunnel; the Martian guards had tracked us
        
        
          down! Karu suddenly pressed a red button in the tunnel and a heavy gate immediately came down
        
        
          and blocked the guards. At the same time, the alarm went off. Karu turned to me and said, “The
        
        
          alarm calls for our soldiers. Run.”
        
        
          Soon, heavy footsteps filled the tunnel. Heavily armed soldiers came after us. We finally
        
        
          reached the end of the tunnel and Karu pressed the green button on the door and we were thrown
        
        
          back to the upper-ground. But Karu and Barabu stopped abruptly. “Com’on, we need to run!” I
        
        
          yelled. Karu answered calmly, “Be calm. The soldiers cannot come up to the surface without the
        
        
          commander’s permission.”
        
        
          Karu led me back to the camp site which was only minutes away from the secret tunnel.
        
        
          Karu and Barabu stopped and turned to me. “It’s time to say goodbye. When you are back, don’t
        
        
          mention anything about Martians or our underground empire. Can you promise me this?”
        
        
          “I promise.”
        
        
          We hugged and said our goodbyes.
        
        
          Andy turned to Phoenix, “This adventure happened decades ago and I had kept it hidden. I
        
        
          studied astronomy since I believed in the existence of the Martians, and I also believe there are
        
        
          other living creatures occupying other planets waiting for us to discover.
        
        
          We, humans are continually damaging the ecological system of Earth. I truly hoped we can
        
        
          find another planet suitable for human survival before we turned Earth into another Mars. I am
        
        
          telling you this as I hope you can carry out my unfulfilled wishes. Will you promise me?”
        
        
          Phoenix nodded and hugged her father tightly, whispering at his ears, “I promise you! I
        
        
          promise you!”