on november 27, the "4thinternational student entrepreneurship contest for university students 2019 aw in osaka" was held in osaka, japan. the "dark blue cube functional underwater vehicle" and "bridge flaw detection sensor" projects of npu won the second prize in the competition and the "3d printed bioceramic bone scaffold" project won the third prize. in particular, the second-prize project "bridge flaw detection sensor" was led by liu yuncong, xin yuepeng, yuan song, wang xinrui, all of whom are juniors of qmes, under the guidance of prof. kong jie.