translation.en: So, I implemented this pen that can help designers and architects not only think in three dimensions, but they can actually draw, so that it's more intuitive to use that way.
translation.zh: 所以就设计出这支笔 帮助设计师和建筑师 不只以三度空间思考, 也可以画3D图形 这样用起来就更直觉多了。