Can nitrogen duck neck take high-speed rail?

You can't. According to Article 16 of China Railway Passenger Train Transportation Regulations, it is forbidden to carry inflammable and explosive articles on the train. Nitrogen duck neck is an inflatable food, which is considered as a kind of inflammable and explosive goods, and it is not allowed to take the high-speed rail. High-speed rail refers to a railway system with high design standards and high speed for the safe operation of trains. It's not limited to railway tracks, not to mention trains. High-speed rail has different regulations in different countries, different times and different scientific research and academic fields.