The device invented by Tian Yongtai to and There were 73 projects, totally 198 exhibits on the "Little Ideas, Inventions, Creations, Reforms, and Tricks" of the Shanghai Youth Exhibition. The "Five Little Achievements" activity deepened and developed the "New Long March Striker" activity, embodying the wisdom and talents of Shanghai youth in economic construction. The device to save locomotive gasoline invented by Tian Yongtai, a young worker of Shanghai No.2 Textile and Transportation Factory and the photothermal lantern developed by Xiao Fan in the youth development team of Changhong Lamps Factory are introduced.