rth, tracing arcs—upper semicircles, lower semicircles, left semicircles, right semicircles… Every instant the head of the rod drew was just a part of a circle. 。This steel rod, which is a commonly us...avel vast distances in space. "It's really inconceivable," Liu Hai shook his head and sighed, "such incredible life." 。Humans on Planet Blue, compared to the legendary humans of the cosmos, are vastly...