The time was between 2123 and 2148. In the 22nd century, most world mineral resources were depleted, and asteroids appeared to be the only locations in the Solar System to look for resources. During the year 2132 U S intelligence discovered that there was a fleet of giant clustered rockets sitting on the launch pads in Jiuquan, the largest Chinese space port, ready for launch. Alarmed, authorities searched old surveillance files and discovered that this fleet was a part of a deep interplanetary space expedition project which began years ago. Famed U S space scientist Dr. David Zhang of NSEA (National Space Engineering Administration) examined the surveillance images, and discovered that a newly established Chinese corporation XinTianDi was developing a kind of humongous nuclear devices with powers equivalent to several thousand megatons (billion tons) of TNT equivalent. A Los Alamos nuclear weapon expert Jack Brown was of the opinion that such huge nuclear devices had no places in war. Meanwhile, Dr. David Zhang also discovered that the armada of giant spaceships was also the work of XinTianDi, and a fleet of spaceships launched earlier were heading towards a 90 mile sized asteroid 8 Flora. U S President immediately ordered the launch of a spy spaceship to 8 Flora to find out the intentions of the Chinese space fleet. This spy spaceship discovered that the Chinese were using autonomous robots to set up a base station on 8 Flora, and the Chinese had started mining operations on 8 Flora. U S immediately began a space project as never seen before, to establish a mining base on 8 Flora, and this project was headed by David Zhang. Thus China and the United States were engaged a fierce but peaceful competition to mine the asteroids.