The canoekayak manufacturer tells you that in ancient times, people found that leaves and trunks would float in water, and found that the weight that leaves can carry is very small, and the weight that the trunk can carry is large. The thicker the trunk, the more weight it can bear. also bigger. The canoekayak manufacturer tells you that people have also found that the cylindrical trunk is unstable in the water, it will roll over, people will not be able to sit on it, and people cannot move on this cylindrical trunk at all.
Na ta način, people use tools such as stone axes, stone adzes, and spades to flatten the round tree trunks. Kasneje, it was found that it was more convenient to work wood with fire than with stone axes. Proizvajalci kanujakov pravijo, da ljudje namažejo deblo z debelo plastjo mokrega blata povsod tam, kjer jih ni treba izkopati., in nato zažgite dele, ki jih želite izkopati. Na ta način, ožgan del sežge v plast oglja, nato pa sekal s kamnito sekiro, lažje je. Tako je narejen kanukajak.
Proizvajalec kanujaka vam pove, da obstaja zapis v starodavni kitajski knjigi “Knjiga sprememb - Xixi” to “posekan les je čoln”, kar pomeni, da je kanu kajak narejen iz rezanega lesa. noter 1958, v okrožju Wujin so izkopali tri kanujake, Provinca Jiangsu. Po raziskavah, bili so kanujaki iz obdobja pomladi in jeseni ter obdobja vojskujočih se držav. Bili so 11 metrov dolgo, 0.9 metrov širok in 0.4 metrov globoko. Zdaj so v kitajskem zgodovinskem muzeju.
