translation.en: 1986, much, much longer before people started talking about ecological issues and environmental issues, I just started testing the paper tube in order to use this as a building structure.
translation.zh: 早在1986年，关于生态和环境问题的 讨论还远远没有开始的时候 我刚刚开始测试纸筒 以便将其作为一种建筑结构使用