Why did Shi Zhenbang pick pine nuts on a hot air balloon?
Because in mountainous areas with high altitude, it is difficult for traditional collection methods to achieve the expected results. As a new means, hot air balloon can collect pinecones more conveniently and efficiently, thus providing fresh ingredients for local residents. In addition to directly using this technology to obtain food, Shi Zhenbang also applied it to popular science education and ecological protection activities, and promoted the concept of environmental protection through these new technologies and knowledge in active exchanges. This behavior was well received by netizens and recorded as a documentary.