China teachers’ beer-bottle rocket
Science teachers in Jiangxi province launched a DIY water rocket built from beer containers and fitted it with an upgraded nozzle to increase thrust, a short social post documented with photos and video. (x.com) The project was shared by People's Daily accounts and has been recirculated as an example of low-cost classroom engineering. (x.com)
A water rocket works by forcing water out of a pressurized bottle, so the bottle shoots upward from the push in the opposite direction. A science teacher in Ji’an, Jiangxi, used that simple principle to launch a homemade rocket built from recycled containers in a video later shared by major state media. (english.news.cn) The teacher is Wang Yin, a science educator in Ji’an, and local reporting said he was guiding students as they adjusted fins and launched bottle-based rockets outdoors in July 2025. Phoenix Jiangxi, citing Dajiang News, said a July 14 video of his students’ “two-stage water rocket” was reposted by People’s Daily and China Central Television and drew more than 30 million plays within two days. (jx.ifeng.com) People’s Daily Online also reported on August 5, 2025 that a group of young rocket enthusiasts in Jiangxi launched a three-stage water rocket made from plastic bottles, and that the clip passed one million likes. China Central Television’s people channel separately placed a student launch in Ji’an on July 14, 2025. (en.people.cn) (people.cctv.com) The classroom appeal is that the hardware is cheap and visible: bottles hold the water, a pump adds air pressure, and the nozzle controls how fast the water escapes. Phoenix Jiangxi quoted Wang saying students fill the bottle with about one-third water, pressurize it with a pump, and then watch high-pressure gas drive the water out and the rocket up. (jx.ifeng.com) That is the same basic physics used in larger rockets, even though the energy source is compressed air instead of burning fuel. The Smithsonian National Air and Space Museum describes a water rocket as a plastic bottle partly filled with water and pressurized air, with the water expelled as thrust. (airandspace.si.edu) Wang’s classes have circulated before this latest burst of attention. Phoenix Jiangxi said he designed a water-rocket course in 2021, and that earlier versions of the project reached about 180 meters after students worked through more than 60 failed attempts. (jx.ifeng.com) The teacher’s background helps explain the engineering style of the project. Phoenix Jiangxi reported that Wang, born in 1990 in Dongping County, Shandong, has a master’s degree in mechanical engineering and later moved with his family to Ji’an in May 2025 to build a science and innovation base there. (jx.ifeng.com) State media framed the rocket as a model of hands-on science teaching rather than a one-off stunt. Xinhua said the project “sparked a passion for science among local kids,” while People’s Daily Online tied the launch to a wider wave of youth interest in space and making things from everyday materials. (english.news.cn) (en.people.cn) The result is a lesson that students can see, hear, and rebuild with parts they recognize: water, air, bottles, fins, and a launch countdown. In Ji’an, that was enough to turn a patch of riverside grass into a physics lab and a viral video at the same time. (people.cctv.com) (jx.ifeng.com)
