At 8 o’clock P.M. in Sierra Leone, December 19th, the completion of the finalconcrete pouring work marks that the roof concrete pouring work of the China-aid Sierra Leona fixed biological safety laboratory projectsmoothly comesto an end. The main structureconstruction work has been finished 5 days in advance, which highly embodies the great efforts that the Oversea Business Department of BUCG made to perform our social responsibility. （Dai Lu）