I think the parent is referring to being able to grow easily. Per the video, an 18m timber can be grown in 3 years. I believe you are thinking of recycle-abili

I think the parent is referring to being able to grow easily. Per the video, an 18m timber can be grown in 3 years. I believe you are thinking of recycle-abiliy, which would be reusing an existing piece of bamboo. Both are valuable considerations.