Three students from Science Club and Team joined the 2019 Fun Science Competition held by the Hong Kong Science Museum and Hong Kong Association for Science and Mathematics Education in the morning of 16/2/2019 (Saturday). Students designed and built up their own car with programming by using micro: bit so as to achieve the target set and complete the competition. Students showed their passion and talent on designing, programming and problem-solving within limited preparation time. Both of our teachers and students enjoyed this competition so much and it's a fruitful experience for them.