The two generations of technicians and engineers in small arms industry in P. R. China have been working scientifically in developing of new type of guns. So after a short period of cooperated work, a new advanced squad gun family has been developed based on the weak conditions in China, which brings the level of guns for infantry to the world level. This is highly rated by the army authorization. This guns family were already used to equip the army assigned to Hong Kong in January, 1997 and shall be used to equip the whole army step by step.