What is the length of the entire human digestive system? What is the length of the intestine? Overall, our digestive tract is about 5.5 meters long, from lips to anus, more than half of which is made of the small intestine!
Which kind of saw can I use to cut bamboo? How to immobilize the bamboo when sawing it? Is there any special trick? A short tutorial based on a video review of 7 highly skilled bamboo craftsmen from around the world.