<正>THERE are children who can spend many contented hours watching lines of industrious ants go back and forth on their urgent mission of collecting food. Some scientists, however, make these children’s fascination seem insignificant, and spend years studying ants as part of their research. Among them is Dr. Zhang Guojie at Shenzhen BGI, China’s largest genome and bioinformatics analysis center, where he is associate director of its Science Department and head of its Genomic Evolution and Comparison Center.